Tibial prosthetic and knee prosthesis having the same

Abstract

The application discloses a tibial prosthesis and a knee joint prosthesis with the same. The tibial prosthesis comprises a patellar ligament attachment surface, a lateral collateral ligament attachment surface and a medial collateral ligament attachment surface, and the surface roughness of at least one of the patellar ligament attachment surface, the lateral collateral ligament attachment surface and the medial collateral ligament attachment surface is less than or equal to a preset value. The tibial prosthesis has the advantages of small friction, low wear, no inflammation and pain, significantly reduced postoperative pain and discomfort, facilitated recovery of the patient, effectively maintained stability and function of the knee joint, long service life and the like.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of artificial prosthesis replacement, in particular to a tibial prosthesis, and further to a knee prosthesis having the tibial prosthesis. BACKGROUND

[0002] The main purpose of tumor knee replacement is to remove tumor tissue in the knee joint while restoring the stability and function of the knee joint. By replacing the damaged joint part with an artificial joint, the patient can regain the ability to walk, go up and down stairs, and other daily activities.

[0003] At present, for most tumor knee patients, the common surgical method is to remove the entire knee joint, including the lower end of the femur, the upper end of the tibia, and the patella, and replace it with an artificial joint. In the artificial joint replacement after tumor resection of the tibial end and the patella, the connection of the ligament to the tumor tibial prosthesis is a key technology, which affects the tightness of the patellar ligament and directly affects the postoperative functional activity of the patient; at the same time, the attachment of the patellar ligament to the tumor tibial prosthesis also causes increased friction between the patellar ligament, and long-term high friction can cause wear of the patellar ligament, and even cause inflammation or damage to the ligament. In the prior art, the contact area between the tumor tibial prosthesis and the patellar ligament is mainly roughened by titanium bead sintering, titanium spraying, sandblasting, etc. The rough joint surface contacts with soft tissue and the patellar ligament, which also aggravates the wear of the patellar ligament. SUMMARY

[0004] The present application aims to at least partially solve one of the technical problems in the related art. To this end, the present application proposes a tibial prosthesis and a knee prosthesis having the tibial prosthesis.

[0005] The tibial prosthesis of the present application comprises a patellar ligament attachment surface, a lateral collateral ligament attachment surface, and a medial collateral ligament attachment surface, and the surface roughness of at least one of the patellar ligament attachment surface, the lateral collateral ligament attachment surface, and the medial collateral ligament attachment surface is less than or equal to a preset value.

[0006] The tibial prosthesis of the present application has the advantages of small friction, low wear, no inflammation and pain, significantly reducing postoperative pain and discomfort, facilitating patient recovery, effectively maintaining the stability and function of the knee joint, and long service life.

[0007] Optionally, the surface roughness of the at least one of the patellar ligament attachment surface, the lateral collateral ligament attachment surface, and the medial collateral ligament attachment surface is less than or equal to 0.1 microns;

[0008] And / or, the width of the patellar ligament attachment surface is greater than or equal to 20 mm and less than or equal to 70 mm, and the length of the patellar ligament attachment surface is greater than or equal to 20 mm and less than or equal to 150 mm;

[0009] and / or, a width of the lateral collateral ligament attachment surface is greater than or equal to 10 mm and less than or equal to 60 mm, and a length of the lateral collateral ligament attachment surface is greater than or equal to 30 mm and less than or equal to 200 mm;

[0010] and / or, a width of the medial collateral ligament attachment surface is greater than or equal to 10 mm and less than or equal to 60 mm, and a length of the medial collateral ligament attachment surface is greater than or equal to 30 mm and less than or equal to 200 mm;

[0011] and / or, a coronal profile of the lateral collateral ligament attachment surface comprises a first lateral straight segment, a lateral curved segment and a second lateral straight segment connected in sequence;

[0012] and / or, a coronal profile of the medial collateral ligament attachment surface comprises a first medial straight segment, a medial curved segment and a second medial straight segment connected in sequence.

[0013] Optionally, the first lateral straight segment extends along a first direction, and the second lateral straight segment extends along a second direction, the second direction being perpendicular to the first direction and a medial-lateral direction;

[0014] and / or, a length of the first lateral straight segment is greater than or equal to 1 mm and less than or equal to 100 mm, and a length of the second lateral straight segment is greater than or equal to 0.5 mm and less than or equal to 100 mm;

[0015] and / or, the lateral curved segment comprises a first lateral arc segment, a second lateral arc segment, a third lateral arc segment and a fourth lateral arc segment connected in sequence, the first lateral arc segment being connected with the first lateral straight segment, and the fourth lateral arc segment being connected with the second lateral straight segment, wherein a radius of curvature of the first lateral arc segment is greater than or equal to 1 mm and less than or equal to 200 mm, a radius of curvature of the second lateral arc segment is greater than or equal to 1 mm and less than or equal to 200 mm, a radius of curvature of the third lateral arc segment is greater than or equal to 1 mm and less than or equal to 1000 mm, and a radius of curvature of the fourth lateral arc segment is greater than or equal to 1 mm and less than or equal to 200 mm;

[0016] and / or, the first medial straight segment extends along a first direction, and the second medial straight segment extends along a second direction;

[0017] and / or, a length of the first medial straight segment is greater than or equal to 1 mm and less than or equal to 100 mm, and a length of the second medial straight segment is greater than or equal to 0.5 mm and less than or equal to 100 mm;

[0018] And / or, the inner curve segment comprises a first inner arc segment, a second inner arc segment, a third inner arc segment and a fourth inner arc segment connected in sequence, the first inner arc segment is connected with the first inner straight line segment, the fourth inner arc segment is connected with the second inner straight line segment, wherein the radius of curvature of the first inner arc segment is greater than or equal to 1 millimeter and less than or equal to 200 millimeters, the radius of curvature of the second inner arc segment is greater than or equal to 1 millimeter and less than or equal to 200 millimeters, the radius of curvature of the third inner arc segment is greater than or equal to 1 millimeter and less than or equal to 1000 millimeters, and the radius of curvature of the fourth inner arc segment is greater than or equal to 1 millimeter and less than or equal to 200 millimeters.

[0019] Optionally, the tibial prosthesis further comprises a patellar ligament binding beam and a distal binding adjustment hole, the distal binding adjustment hole is away from the patella center relative to the patellar ligament binding beam in the first direction;

[0020] And / or, the tibial prosthesis further comprises a patellar ligament binding beam, the center of the patellar ligament binding beam is greater than or equal to 10 millimeters and less than or equal to 50 millimeters away from the tibial joint line in the first direction;

[0021] And / or, the tibial prosthesis further comprises a patellar ligament binding beam and a proximal binding adjustment hole, the proximal binding adjustment hole is adjacent to the patella center relative to the patellar ligament binding beam in the first direction.

[0022] Optionally, the patellar ligament attachment surface is provided with a mounting groove, and the patellar ligament binding beam spans the groove opening of the mounting groove;

[0023] And / or, the side of the patellar ligament binding beam close to the patella center is greater than or equal to 20 millimeters and less than or equal to 100 millimeters away from the patella center in the first direction;

[0024] And / or, the distance between the distal binding adjustment hole and the patella center in the first direction is greater than or equal to 30 millimeters and less than or equal to 200 millimeters;

[0025] And / or, the distance between the proximal binding adjustment hole and the patella center in the first direction is greater than or equal to 10 millimeters and less than or equal to 60 millimeters;

[0026] And / or, the size of the patellar ligament binding beam in the medial-lateral direction is greater than or equal to 10 millimeters and less than or equal to 50 millimeters;

[0027] And / or, the distal binding adjustment hole is a plurality of distal binding adjustment holes, the plurality of distal binding adjustment holes are arranged in the medial-lateral direction, and the plurality of distal binding adjustment holes are arranged symmetrically in the medial-lateral direction;

[0028] And / or, the proximal bundle adjustment hole is multiple, multiple proximal bundle adjustment holes are arranged in the inner-outer direction, and multiple proximal bundle adjustment holes are arranged symmetrically in the inner-outer direction.

[0029] And / or, the distance between the side of the patellar ligament bundle beam close to the tibial joint line and the tibial joint line in the first direction is greater than or equal to 5 mm and less than or equal to 40 mm.

[0030] And / or, the distance between the distal bundle adjustment hole and the tibial joint line in the first direction is greater than or equal to 10 mm and less than or equal to 80 mm.

[0031] And / or, the distance between the proximal bundle adjustment hole and the tibial joint line in the first direction is greater than or equal to 1 mm and less than or equal to 30 mm.

[0032] And / or, the diameter of each proximal bundle adjustment hole is greater than or equal to 1 mm and less than or equal to 10 mm.

[0033] Optionally, the tibial prosthesis further comprises a plurality of bundle adjustment holes, the plurality of bundle adjustment holes comprising: first and second outer bundle adjustment holes, the first and second outer bundle adjustment holes being located on the outer side of the patellar ligament bundle beam and arranged in the first direction; and first and second inner bundle adjustment holes, the first and second inner bundle adjustment holes being located on the inner side of the patellar ligament bundle beam and arranged in the first direction, the first outer bundle adjustment hole and the first inner bundle adjustment hole being arranged symmetrically in the inner-outer direction, and the second outer bundle adjustment hole and the second inner bundle adjustment hole being arranged symmetrically in the inner-outer direction.

[0034] Optionally, the plurality of bundle adjustment holes are all away from the patellar center in the first direction relative to the proximal bundle adjustment hole.

[0035] And / or, the distance between the first outer bundle adjustment hole and the first inner bundle adjustment hole and the patellar center in the first direction is greater than or equal to 20 mm and less than or equal to 80 mm.

[0036] And / or, the distance between the second outer bundle adjustment hole and the second inner bundle adjustment hole and the patellar center in the first direction is greater than or equal to 30 mm and less than or equal to 100 mm.

[0037] And / or, the centers of the second outer bundle adjustment hole and the second inner bundle adjustment hole are away from the patellar center in the first direction relative to the patellar ligament bundle beam.

[0038] And / or, the distance between the first outer bundle adjustment hole and the first inner bundle adjustment hole and the tibial articular line in the first direction is greater than or equal to 5 mm and less than or equal to 40 mm.

[0039] And / or, the distance between the second outer bundle adjustment hole and the second inner bundle adjustment hole and the tibial articular line in the first direction is greater than or equal to 7 mm and less than or equal to 60 mm.

[0040] Optionally, the tibial prosthesis further comprises a first fibular fixation groove and a second fibular fixation groove, and the first fibular fixation groove and the second fibular fixation groove are symmetrically arranged in the medial-lateral direction.

[0041] Optionally, the first fibular fixation groove and the second fibular fixation groove are both triangular grooves; and / or, the tibial prosthesis further comprises a patellar ligament bundle beam, the patellar ligament attachment surface is provided with a mounting groove, the first fibular fixation groove and the second fibular fixation groove are symmetrically arranged on both sides of the mounting groove in the medial-lateral direction.

[0042] Optionally, the tibial prosthesis further comprises a plurality of groups of fibular fixation holes, and each group of fibular fixation holes comprises a medial fibular fixation hole and a lateral fibular fixation hole symmetrically arranged in the medial-lateral direction, the medial fibular fixation hole and the lateral fibular fixation hole both extend in the medial-lateral direction and respectively penetrate two side walls of the mounting groove, the first fibular fixation groove communicates with the mounting groove through the lateral fibular fixation hole, and the second fibular fixation groove communicates with the mounting groove through the medial fibular fixation hole.

[0043] The knee joint prosthesis of the present application comprises the tibial prosthesis of the present application.

[0044] The knee joint prosthesis of the present application has the advantages of small friction, low wear, no inflammation and pain, significant reduction of postoperative pain and discomfort, facilitation of patient recovery, good stability, and long service life. BRIEF DESCRIPTION OF DRAWINGS

[0045] Figure 1 is a schematic diagram of the anatomical position of the patellar ligament on the tibia;

[0046] Figure 2 is a schematic diagram of the length and width of the patellar ligament attachment surface of the tibial prosthesis according to an embodiment of the present application;

[0047] Figure 3 is a profile line of the patellar ligament attachment surface of the tibial prosthesis according to an embodiment of the present application in the sagittal plane;

[0048] Figure 4is a schematic illustration of the anatomical position of the lateral collateral ligament on the tibia;

[0049] Figure 5 is a profile line of the coronal plane of the lateral collateral ligament attachment surface of a tibial prosthesis according to an embodiment of the application;

[0050] Figure 6 is a schematic illustration of the anatomical position of the medial collateral ligament on the tibia;

[0051] Figure 7 is a profile line of the coronal plane of the medial collateral ligament attachment surface of a tibial prosthesis according to an embodiment of the application;

[0052] Figure 8 is a schematic illustration of the structure of a tibial prosthesis according to an embodiment of the application;

[0053] Figure 9 is a schematic illustration of the structure of a tibial prosthesis according to an embodiment of the application;

[0054] Figure 10 is a schematic illustration of the structure of a tibial prosthesis according to an embodiment of the application;

[0055] Figure 11 is a schematic illustration of the structure of a tibial prosthesis according to an embodiment of the application;

[0056] Figure 12 is a schematic illustration of the fixation of a fibula to a tibial prosthesis according to an embodiment of the application;

[0057] Figure 13 is a schematic illustration of the structure of a knee prosthesis according to an embodiment of the application;

[0058] Figure 14 is a schematic illustration of the structure of a knee prosthesis according to an embodiment of the application;

[0059] Figure 15 is a schematic illustration of the structure of a knee prosthesis according to an embodiment of the application;

[0060] Figure 16 is a schematic illustration of the structure of a knee prosthesis according to an embodiment of the application. DETAILED DESCRIPTION

[0061] Embodiments of the application are described in detail below, examples of which are shown in the drawings. The embodiments described below are examples and are intended to be illustrative of the application, and are not to be construed as limiting the application.

[0062] A tibial prosthesis 100 according to an embodiment of the application is described below with reference to the drawings. As Figures 1-16As shown, the tibial prosthesis 100 according to an embodiment of the present invention includes a patellar ligament attachment surface 11, a lateral collateral ligament attachment surface 12, and a medial collateral ligament attachment surface 13. The surface roughness of at least one of the patellar ligament attachment surface 11, the lateral collateral ligament attachment surface 12, and the medial collateral ligament attachment surface 13 is less than or equal to a preset value.

[0063] According to an embodiment of the present invention, the tibial prosthesis 100 can make at least one of the patellar ligament attachment surface 11, the lateral collateral ligament attachment surface 12, and the medial collateral ligament attachment surface 13 smoother by making the surface roughness of at least one of them less than or equal to a preset value.

[0064] This significantly reduces friction between at least one of the patellar ligament, lateral collateral ligament, and medial collateral ligament and the tibial prosthesis 100. This not only significantly reduces inflammation and pain caused by wear or friction of at least one of the patellar ligament, lateral collateral ligament, and medial collateral ligament, helping to maintain cleanliness and hygiene of the surgical site, and significantly reducing postoperative pain and discomfort to promote patient recovery, but also effectively protects at least one of the patellar ligament, lateral collateral ligament, and medial collateral ligament from injury, thereby effectively maintaining the stability and function of the knee joint.

[0065] By significantly reducing friction between at least one of the patellar ligament, lateral collateral ligament, and medial collateral ligament and the tibial prosthesis 100, the lifespan of the tibial prosthesis 100 can be greatly extended, effectively reducing the risk of reoperation or revision surgery due to joint wear. Furthermore, by reducing pain and discomfort, promoting recovery, and extending lifespan, patient satisfaction with treatment can be improved, contributing to a better quality of life and enhancing self-confidence and social skills.

[0066] Therefore, the tibial prosthesis 100 according to the present invention has the advantages of low friction, low wear, no inflammatory response and pain, significantly reduced postoperative pain and discomfort, beneficial to patient recovery, effectively maintaining the stability and function of the knee joint, and long service life.

[0067] like Figures 1-16 As shown, the tibial prosthesis 100 according to an embodiment of the present invention includes a patellar ligament attachment surface 11, a lateral collateral ligament attachment surface 12, and a medial collateral ligament attachment surface 13.

[0068] The surface roughness of the patellar tendon attachment surface 11 is less than or equal to 0.1 micrometers. Optionally, the patellar tendon attachment surface 11 is highly polished so that the surface roughness of the patellar tendon attachment surface 11 is less than or equal to 0.1 micrometers.

[0069] The surface roughness of the lateral collateral ligament attachment surface 12 is less than or equal to 0.1 microns. Optionally, the lateral collateral ligament attachment surface 12 is subjected to high polishing treatment so as to make the surface roughness of the lateral collateral ligament attachment surface 12 less than or equal to 0.1 microns.

[0070] The surface roughness of the medial collateral ligament attachment surface 13 is less than or equal to 0.1 microns. Optionally, the medial collateral ligament attachment surface 13 is subjected to high polishing treatment so as to make the surface roughness of the medial collateral ligament attachment surface 13 less than or equal to 0.1 microns.

[0071] Optionally, the patellar ligament contact area is located within the range of the patellar ligament attachment surface 11. That is, the edge of the patellar ligament attachment surface 11 surrounds (encircles) the patellar ligament contact area. The patellar ligament contact area refers to the area where the tibial prosthesis 100 contacts the patellar ligament in the human body at rest.

[0072] Since the patellar ligament will move to contact different areas of the tibial prosthesis 100 during human activity (e.g., walking, going upstairs, going downstairs, running, etc.), by locating the patellar ligament contact area within the range of the patellar ligament attachment surface 11, the patellar ligament is further prevented from being damaged by the rough surface of the tibial prosthesis 100, and the patellar ligament attachment surface 11 can be adapted to different situations of different patients, so as to effectively improve the applicability and application range of the tibial prosthesis 100.

[0073] The patellar ligament is attached to the tibial prosthesis 100. First, the anatomical position of the patellar ligament on the tibia is found in the sagittal plane (S1), and the width W1' (in most cases, greater than or equal to 10 mm and less than or equal to 50 mm) and the length L1' (in most cases, greater than or equal to 10 mm and less than or equal to 100 mm) of the patellar ligament are determined. Figure 1 Then, the area and position where the patellar ligament is attached to the tibial prosthesis 100 are determined in the sagittal plane, and the contour of the patellar ligament attachment surface 11 is drawn in the sagittal plane (S2). Figure 3 Finally, the contour position is fixed with closed constraints, and the patellar ligament attachment surface 11 is subjected to high polishing treatment so as to make the surface roughness of the patellar ligament attachment surface 11 less than or equal to 0.1 microns. The contour line S1 of the patellar ligament attachment surface 11 is as shown in Figure 3

[0074] ​Optionally, the width W1 of the patellar ligament attachment surface 11 is greater than or equal to 20 mm and less than or equal to 70 mm, and the length L1 of the patellar ligament attachment surface 11 is greater than or equal to 20 mm and less than or equal to 150 mm. This further ensures that the patellar ligament remains within the range of the patellar ligament attachment surface 11 during human activity, i.e., the patellar ligament is always in contact with the patellar ligament attachment surface 11, thereby further preventing damage to the patellar ligament caused by cutting by the rough surface of the tibial prosthesis 100. Moreover, it allows the patellar ligament attachment surface 11 to adapt to different conditions of different patients, thereby effectively improving the applicability and application range of the tibial prosthesis 100.

[0075] Optionally, the lateral collateral ligament contact area is located within the area of ​​the lateral collateral ligament attachment surface 12. That is, the edge of the lateral collateral ligament attachment surface 12 surrounds (encircles) the lateral collateral ligament contact area. The lateral collateral ligament contact area refers to the area where the tibial prosthesis 100 contacts the lateral collateral ligament in a static state.

[0076] During human activities (such as walking, going up and down stairs, running, etc.), the lateral collateral ligament moves with the activity to contact different areas of the tibial prosthesis 100. Therefore, by making the contact area of ​​the lateral collateral ligament within the range of the lateral collateral ligament attachment surface 12, damage to the lateral collateral ligament caused by being cut by the rough surface of the tibial prosthesis 100 can be further prevented. Moreover, the lateral collateral ligament attachment surface 12 can be adapted to different conditions of different patients, so as to effectively improve the applicability and application range of the tibial prosthesis 100.

[0077] The lateral collateral ligament attaches to the lateral aspect of the tibial prosthesis 100. First, determine the contact distance of the lateral collateral ligament on the lateral aspect of the tibia in the coronal plane. Figure 4 The distances D1 and D2 are the distances from the center of the tibia to the lateral collateral ligament, respectively. D1 is the distance from the horizontal plane of the tibia to the lateral collateral ligament, and D2 is the distance from the tibial joint line to the distal end of the lateral collateral ligament. In most cases, distance D1 is greater than or equal to 5 mm and less than or equal to 30 mm, and distance D2 is greater than or equal to 20 mm and less than or equal to 150 mm.

[0078] Then, the region and location of the lateral collateral ligament attachment to the tibial prosthesis 100 are established, and the outline S2 of the lateral collateral ligament attachment surface 12 is drawn in the coronal plane. Figure 5 Finally, the position of the lateral collateral ligament attachment surface 12 is sealed and fixed, and then the lateral collateral ligament attachment surface 12 is highly polished so that the surface roughness of the lateral collateral ligament attachment surface 12 is less than or equal to 0.1 micrometers.

[0079] Optionally, the width W2 of the lateral collateral ligament attachment surface 12 is greater than or equal to 10 mm and less than or equal to 60 mm, and the length L2 of the lateral collateral ligament attachment surface 12 is greater than or equal to 30 mm and less than or equal to 200 mm. The width W2 of the lateral collateral ligament attachment surface 12 is the distance between the tibial medullary cavity center P2 and the lateral edge of the lateral collateral ligament attachment surface 12.

[0080] Thus, it can be further ensured that the lateral collateral ligament is always within the range of the lateral collateral ligament attachment surface 12 during human activities, i.e. the lateral collateral ligament is always in contact with the lateral collateral ligament attachment surface 12, thereby further preventing the lateral collateral ligament from being damaged by being cut by the rough surface of the tibial prosthesis 100. Moreover, the lateral collateral ligament attachment surface 12 can be adapted to different situations of different patients, so as to effectively improve the applicability and application range of the tibial prosthesis 100.

[0081] As shown in Figure 5 , the coronal profile of the lateral collateral ligament attachment surface 12 includes a first outer straight line segment 121, an outer curve segment and a second outer straight line segment 122 connected in sequence. Thus, the shape of the lateral collateral ligament attachment surface 12 and its coronal profile can be more reasonable, and the lateral collateral ligament attachment surface 12 can be adapted to different situations of different patients, so as to effectively improve the applicability and application range of the tibial prosthesis 100.

[0082] Optionally, the first outer straight line segment 121 extends in a first direction. The first direction can be the length direction of the lateral collateral ligament attachment surface 12 (the medial collateral ligament attachment surface 13, the patellar ligament attachment surface 11). The second outer straight line segment 122 extends in a second direction, which is perpendicular to the first direction and the medial-lateral direction. The side away from the median sagittal plane is the lateral side, and the side adjacent to the median sagittal plane is the medial side, i.e. the medial-lateral direction is perpendicular to the median sagittal plane. For example, the first direction can be the up-down direction, and the second direction can be the front-back direction. The first direction is shown by the arrow A in Figure 8 , and the medial-lateral direction is shown by the arrow B in Figure 8 .

[0083] Optionally, the length L4 of the first outer straight line segment 121 is greater than or equal to 1 mm and less than or equal to 100 mm, and the length L5 of the second outer straight line segment 122 is greater than or equal to 0.5 mm and less than or equal to 100 mm. Thus, the shape of the lateral collateral ligament attachment surface 12 and its coronal profile can be more reasonable, and the lateral collateral ligament attachment surface 12 can be adapted to different situations of different patients, so as to effectively improve the applicability and application range of the tibial prosthesis 100.

[0084] As shown in Figure 5As shown, the outer curve segment includes a first outer arc segment 123, a second outer arc segment 124, a third outer arc segment 125, and a fourth outer arc segment 126 connected in sequence. The first outer arc segment 123 is connected to the first outer straight line segment 121, and the fourth outer arc segment 126 is connected to the second outer straight line segment 122. This allows for a more rational shape of the lateral collateral ligament attachment surface 12 and its coronal contour, and enables the lateral collateral ligament attachment surface 12 to adapt to different conditions in different patients, thereby effectively improving the applicability and application range of the tibial prosthesis 100.

[0085] Optionally, the radius of curvature of the first outer arc segment 123 is greater than or equal to 1 mm and less than or equal to 200 mm, the radius of curvature of the second outer arc segment 124 is greater than or equal to 1 mm and less than or equal to 200 mm, the radius of curvature of the third outer arc segment 125 is greater than or equal to 1 mm and less than or equal to 1000 mm, and the radius of curvature of the fourth outer arc segment 126 is greater than or equal to 1 mm and less than or equal to 200 mm. This allows for a more rational shape of the lateral collateral ligament attachment surface 12 and its coronal contour, and enables the lateral collateral ligament attachment surface 12 to adapt to different conditions in different patients, thereby effectively improving the applicability and application range of the tibial prosthesis 100.

[0086] Optionally, the medial collateral ligament contact area is located within the area of ​​the medial collateral ligament attachment surface 13. That is, the edge of the medial collateral ligament attachment surface 13 surrounds (encircles) the medial collateral ligament contact area. The medial collateral ligament contact area refers to the area where the tibial prosthesis 100 contacts the medial collateral ligament when the human body is at rest.

[0087] During human activities (such as walking, going up and down stairs, running, etc.), the medial collateral ligament moves with the activity to contact different areas of the tibial prosthesis 100. Therefore, by making the contact area of ​​the medial collateral ligament within the range of the medial collateral ligament attachment surface 13, damage to the medial collateral ligament caused by being cut by the rough surface of the tibial prosthesis 100 can be further prevented. Moreover, the medial collateral ligament attachment surface 13 can be adapted to different conditions of different patients, so as to effectively improve the applicability and application range of the tibial prosthesis 100.

[0088] The medial collateral ligament attaches to the medial aspect of the tibial prosthesis 100. First, determine the contact distance of the medial collateral ligament on the medial aspect of the tibia in the coronal plane. Figure 6 The distances D3 and D4 are the distances from the center of the tibia to the medial collateral ligament (i.e., from the tibial joint line to the distal end of the medial collateral ligament). In most cases, distance D3 is greater than or equal to 5 mm and less than or equal to 30 mm, and distance D4 is greater than or equal to 20 mm and less than or equal to 150 mm.

[0089] Then, the region and position where the medial collateral ligament is attached to the tibial prosthesis 100 are established, and a profile line S3 of the medial collateral ligament attachment surface 13 is drawn in the coronal plane. Figure 7 Finally, the position of the medial collateral ligament attachment surface 13 is fixed by closed constraints, and the medial collateral ligament attachment surface 13 is subjected to high polishing treatment so that the surface roughness of the medial collateral ligament attachment surface 13 is less than or equal to 0.1 microns.

[0090] Optionally, the width W3 of the medial collateral ligament attachment surface 13 is greater than or equal to 10 mm and less than or equal to 60 mm, and the length L3 of the medial collateral ligament attachment surface 13 is greater than or equal to 30 mm and less than or equal to 200 mm. The width W3 of the medial collateral ligament attachment surface 13 is the distance between the center P2 of the tibial medullary cavity and the medial edge of the medial collateral ligament attachment surface 13.

[0091] Thereby, it can be further ensured that the medial collateral ligament is always within the range of the medial collateral ligament attachment surface 13 during human activities, i.e. the medial collateral ligament is always in contact with the medial collateral ligament attachment surface 13, thereby further preventing the medial collateral ligament from being damaged by being cut by the rough surface of the tibial prosthesis 100. Moreover, the medial collateral ligament attachment surface 13 can be adapted to different situations of different patients, so as to effectively improve the applicability and application range of the tibial prosthesis 100.

[0092] As shown in Figure 7 , the coronal plane profile of the medial collateral ligament attachment surface 13 includes a first inner straight line segment 131, an inner curved line segment and a second inner straight line segment 132 connected in sequence. Thereby, the shape of the medial collateral ligament attachment surface 13 and its coronal plane profile can be more reasonable, and the medial collateral ligament attachment surface 13 can be adapted to different situations of different patients, so as to effectively improve the applicability and application range of the tibial prosthesis 100.

[0093] Optionally, the first inner straight line segment 131 extends in a first direction, and the second inner straight line segment 132 extends in a second direction.

[0094] The length L6 of the first inner straight line segment 131 is greater than or equal to 1 mm and less than or equal to 100 mm, and the length L7 of the second inner straight line segment 132 is greater than or equal to 0.5 mm and less than or equal to 100 mm. Thereby, the shape of the medial collateral ligament attachment surface 13 and its coronal plane profile can be more reasonable, and the medial collateral ligament attachment surface 13 can be adapted to different situations of different patients, so as to effectively improve the applicability and application range of the tibial prosthesis 100.

[0095] As shown in Figure 7As shown, the inner curve section includes first inner arc segment 133, second inner arc segment 134, third inner arc segment 135 and fourth inner arc segment 136 connected in sequence. First inner arc segment 133 is connected with first inner straight line segment 131, and fourth inner arc segment 136 is connected with second inner straight line segment 132. In this way, the shape of medial collateral ligament attachment surface 13 and its coronal profile can be more reasonable, and medial collateral ligament attachment surface 13 can adapt to different situations of different patients, so as to effectively improve the applicability and application range of tibial prosthesis 100.

[0096] Alternatively, the radius of curvature of first inner arc segment 133 is greater than or equal to 1 millimeter and less than or equal to 200 millimeters, the radius of curvature of second inner arc segment 134 is greater than or equal to 1 millimeter and less than or equal to 200 millimeters, the radius of curvature of third inner arc segment 135 is greater than or equal to 1 millimeter and less than or equal to 1000 millimeters, and the radius of curvature of fourth inner arc segment 136 is greater than or equal to 1 millimeter and less than or equal to 200 millimeters. In this way, the shape of medial collateral ligament attachment surface 13 and its coronal profile can be more reasonable, and medial collateral ligament attachment surface 13 can adapt to different situations of different patients, so as to effectively improve the applicability and application range of tibial prosthesis 100.

[0097] As shown in FIG. 1, Figure 2 , Figure 3 Figure 5 , Figures 7-16 As shown in FIG. 1, tibial prosthesis 100 further includes patellar ligament binding beam 2, and the patellar ligament is bound with patellar ligament binding beam 2. As shown in FIG. 1, Figure 11 The distance D5 between the center of patellar ligament binding beam 2 and the tibial joint line L in the first direction is greater than or equal to 10 millimeters and less than or equal to 50 millimeters.

[0098] In this way, the tension of the patellar ligament can be between 324.294N-1682.403522N, thereby meeting the patellar ligament tension specification at 30 degrees, 60 degrees, 90 degrees, 120 degrees, etc. of knee flexion under the activity types of walking, going upstairs, going downstairs, deep squatting, etc., so as to help maintain knee stability, ensure normal alignment of the knee during activity, and support joint mobility.

[0099] The relationship between the tension of the patellar ligament and the distance D5 between the center of patellar ligament binding beam 2 and the center of the patella P1 in the first direction and the knee flexion angle is shown in Table 1.

[0100] Table 1

[0101]

[0102]

[0103] As shown in FIG. 1, Figure 2 , Figure 3 , Figure 5、 Figures 7-16 As shown in FIG. 1, the tibial prosthesis 100 further comprises a distal binding adjustment hole 31. The distal binding adjustment hole 31 is distal to the patellar ligament binding beam 2 relative to the patellar center P1 (tibial joint line L) in the first direction. That is, the distal binding adjustment hole 31 is distal to the proximal end of the patella relative to the patellar ligament binding beam 2 in the first direction.

[0104] When the patient's patella is a high patella, the patellar ligament can be combined with the patellar ligament binding beam 2 and the distal binding adjustment hole 31 to bind, so that the patella can be stretched distally to solve the problem of high patella. When the patient's patella is a normal patella, the patellar ligament can be bound with the patellar ligament binding beam 2. Thus, the tibial prosthesis 100 can not only be used for patients with normal patella, but also for patients with high patella, thereby further improving the applicability and application range of the tibial prosthesis 100.

[0105] As shown in FIG. 1, Figure 2 、 Figure 3 、 Figures 8-11 As shown in FIG. 1, the distal binding adjustment hole 31 is multiple, the multiple distal binding adjustment holes 31 are arranged in the medial-lateral direction, and the multiple distal binding adjustment holes 31 are symmetrically arranged in the medial-lateral direction. That is, the distance between the multiple distal binding adjustment holes 31 and the patellar center P1 (tibial joint line L) in the first direction is equal to each other. Thus, the structure of the tibial prosthesis 100 can be more reasonable, and the patella can be more effectively stretched distally, thereby better solving the problem of high patella.

[0106] Optionally, the distance D6 between the side of the patellar ligament binding beam 2 close to the tibial joint line L and the tibial joint line L in the first direction is greater than or equal to 5 mm and less than or equal to 40 mm. The upper plane of the tibial prosthesis 100 serves as a reference plane after osteotomy, and the tibial joint line is located on the upper plane of the tibial prosthesis 100. By controlling the distance D6, the position of the patellar ligament binding beam 2 on the tibial prosthesis 100 can be more accurately controlled, and in turn the position of the patellar ligament binding on the tibial prosthesis 100 can be accurately controlled, so as to accurately limit the position of the patellar ligament on the tibial prosthesis 100.

[0107] The distance D7 between the distal binding adjustment hole 31 and the tibial joint line L in the first direction is greater than or equal to 10 mm and less than or equal to 80 mm. Thus, the patella can be more effectively stretched distally, thereby better solving the problem of high patella.

[0108] Optionally, as shown in FIG. 1, Figure 10 The distance D12 between the side of the patellar ligament binding beam 2 close to the patellar center P1 and the patellar center P1 in the first direction is greater than or equal to 20 mm and less than or equal to 100 mm. Thus, the patellar ligament can be better bound to the patellar ligament binding beam 2, and the patella can be more accurately limited, so as to prevent the patella from moving randomly.

[0109] As shown in Figure 10 , the distance D9 between the distal binding adjustment hole 31 and the patella center P1 in the first direction is greater than or equal to 30 mm and less than or equal to 200 mm. In this way, the patella can be more effectively stretched distally, thereby better solving the problem of high patella.

[0110] Optionally, as shown in Figure 11 , the size D11 of the patellar ligament binding beam 2 in the medial-lateral direction is greater than or equal to 10 mm and less than or equal to 50 mm. In this way, the patellar ligament binding beam 2 can have enough space for binding the patellar ligament.

[0111] As shown in Figure 2 , Figure 3 , Figure 5 , Figures 7-16 , the tibial prosthesis 100 further comprises a proximal binding adjustment hole 32. The proximal binding adjustment hole 32 is adjacent to the patellar ligament binding beam 2 in the first direction relative to the patella center (tibial joint line L). That is, the proximal binding adjustment hole 32 is adjacent to the proximal end of the patella in the first direction relative to the patellar ligament binding beam 2.

[0112] When the patient's patella is a low patella, the patellar ligament can be combined with the patellar ligament binding beam 2 and the proximal binding adjustment hole 32 to bind, so that the patella can be stretched proximally to solve the problem of low patella. When the patient's patella is a normal patella, the patellar ligament can be bound with the patellar ligament binding beam 2. In this way, the tibial prosthesis 100 can not only be used for patients with normal patella, but also for patients with low patella, thereby further improving the applicability and application range of the tibial prosthesis 100.

[0113] As shown in Figure 2 , Figure 3 , Figures 8-11 , the proximal binding adjustment hole 32 is a plurality of proximal binding adjustment holes 32, the plurality of proximal binding adjustment holes 32 are arranged in the medial-lateral direction, and the plurality of proximal binding adjustment holes 32 are symmetrically arranged in the medial-lateral direction. That is, the plurality of proximal binding adjustment holes 32 are equal in distance from the patella center P1 (tibial joint line L) in the first direction. In this way, the structure of the tibial prosthesis 100 can be more reasonable, and the patella can be more effectively stretched distally, thereby better solving the problem of high patella.

[0114] Optionally, as shown in Figure 10 , the distance D10 between the proximal binding adjustment hole 32 and the patella center P1 in the first direction is greater than or equal to 10 mm and less than or equal to 60 mm. In this way, the patella can be more effectively stretched proximally, thereby better solving the problem of low patella.

[0115] Optionally, as shown in Figure 9As shown, the distance D16 between the proximal end binding adjustment hole 32 and the tibial articular line L in the first direction is greater than or equal to 1 mm and less than or equal to 30 mm. In this way, the patella can be more effectively pulled proximally, thereby better addressing the problem of low patella.

[0116] Optionally, as shown, Figure 8 The patellar ligament attachment surface 11 is provided with a seating groove 14, and the patellar ligament binding beam 2 spans the groove of the seating groove 14. It can be understood that by providing the seating groove 14, the tibial tuberosity can be seated from the patellar tendon insertion point and the patellar tendon free bone block is connected to the patellar ligament, providing a breakthrough for the bone block connected to the patellar ligament, ensuring that the patellar ligament can be completely implanted on the tibial prosthesis 100. At the same time, in this embodiment, the patellar ligament binding beam 2 and the tibial prosthesis 100 are integrally provided, further avoiding loosening of the patellar ligament binding beam 2 under the stretching and contraction of the ligament for a long time.

[0117] Specifically, the surface roughness in the seating groove 14 is the same as that of the patellar ligament attachment surface 11, thereby further reducing wear.

[0118] As shown in Figure 2 , Figure 3 , Figures 8-11 The tibial prosthesis 100 further includes a plurality of binding adjustment holes, including a first outer binding adjustment hole 41, a second outer binding adjustment hole 42, a first inner binding adjustment hole 43, and a second inner binding adjustment hole 44.

[0119] The first outer binding adjustment hole 41 and the second outer binding adjustment hole 42 are located on the outer side of the patellar ligament binding beam 2, and are arranged in the first direction. The first inner binding adjustment hole 43 and the second inner binding adjustment hole 44 are located on the inner side of the patellar ligament binding beam 2, and are arranged in the first direction. The first outer binding adjustment hole 41 and the first inner binding adjustment hole 43 are symmetrically arranged in the inner-outer direction, and the second outer binding adjustment hole 42 and the second inner binding adjustment hole 44 are symmetrically arranged in the inner-outer direction.

[0120] Because the patellar ligament is reconstructed and the installation position of the patellar ligament changes, the positioning reference changes, which can cause the center of the patella to be not in the ideal position, resulting in the problem of tight outside and loose inside or tight inside and loose outside of the patellar ligament. In the related art, the tightness of the patellar ligament is solved by removing the surrounding soft tissue or changing the thickness of the patella, but this can cause secondary trauma to the human body.

[0121] By setting the first outer bundle adjustment hole 41, the second outer bundle adjustment hole 42, the first inner bundle adjustment hole 43 and the second inner bundle adjustment hole 44, the tightness adjustment problem of the patellar ligament connected with the tibial prosthesis 100 can be solved, thereby reducing the wear and pain caused by uneven force on the patellar ligament, without damaging the self-soft tissue, reducing the patellar bone mass, and causing secondary trauma to the human body.

[0122] Thereby, the risk of patellar motion abnormality and dislocation caused by improper patellar ligament binding is reduced, thereby helping to restore the normal function of the knee joint (including flexion and extension activities and load-bearing capacity), so as to improve the quality of life of the patient, help the patient to return to normal life and work faster, and by precisely controlling the binding position and tension of the patellar ligament, the incidence of postoperative complications such as infection, pain and stiffness can be reduced.

[0123] Specifically, when the medial side of the patellar ligament is under large force and the lateral side is under small force (tight inside and loose outside), the patellar ligament can be combined with the patellar ligament binding beam 2 and the proximal bundle adjustment hole 32 (the distal bundle adjustment hole 31) for binding, and at least one of the first outer bundle adjustment hole 41 and the second outer bundle adjustment hole 42 is further combined with the patellar ligament for binding. Thereby, the lateral pulling force applied to the patellar ligament can be increased, and the medial pulling force applied to the patellar ligament can be reduced.

[0124] When the medial side of the patellar ligament is under small force and the lateral side is under large force (loose inside and tight outside), the patellar ligament can be combined with the patellar ligament binding beam 2 and the proximal bundle adjustment hole 32 (the distal bundle adjustment hole 31) for binding, and at least one of the first inner bundle adjustment hole 43 and the second inner bundle adjustment hole 44 is further combined with the patellar ligament for binding. Thereby, the medial pulling force applied to the patellar ligament can be increased, and the lateral pulling force applied to the patellar ligament can be reduced.

[0125] For example, when the tibial prosthesis 100 is installed on the tibia of the left leg, the first outer bundle adjustment hole 41 and the second outer bundle adjustment hole 42 are located on the left side of the first inner bundle adjustment hole 43 and the second inner bundle adjustment hole 44; when the tibial prosthesis 100 is installed on the tibia of the right leg, the first outer bundle adjustment hole 41 and the second outer bundle adjustment hole 42 are located on the right side of the first inner bundle adjustment hole 43 and the second inner bundle adjustment hole 44. Figure 2 、 Figure 3 、 Figure 5 、 Figures 7-16 The tibial prosthesis 100 shown can be installed on the tibia of the right leg.

[0126] Optionally, the plurality of binding adjustment holes are all away from the patella center P1 in the first direction relative to the proximal binding adjustment hole 32. That is, the first outer binding adjustment hole 41, the second outer binding adjustment hole 42, the first inner binding adjustment hole 43 and the second inner binding adjustment hole 44 are all away from the patella center P1 in the first direction relative to the proximal binding adjustment hole 32. Thus, the tightness adjustment problem of the patellar ligament and the tibial prosthesis 100 can be better solved, thereby further reducing the wear and tear pain caused by uneven force of the patellar ligament.

[0127] As shown in Figure 2 , Figure 3 , Figures 8-11 , the first outer binding adjustment hole 41 is opposite to the patellar ligament binding beam 2 in the medial-lateral direction, and the first inner binding adjustment hole 43 is opposite to the patellar ligament binding beam 2 in the medial-lateral direction. That is, the first outer binding adjustment hole 41, the first inner binding adjustment hole 43 and the patellar ligament binding beam 2 are substantially equal to each other in the distance from the patella center P1 (tibial joint line L) in the first direction.

[0128] Thus, the tightness adjustment problem of the patellar ligament and the tibial prosthesis 100 can be better solved, thereby further reducing the wear and tear pain caused by uneven force of the patellar ligament.

[0129] Optionally, the center of the second outer binding adjustment hole 42 is away from the patella center P1 (tibial joint line L) in the first direction relative to the patellar ligament binding beam 2, and the center of the second inner binding adjustment hole 44 is away from the patella center P1 (tibial joint line L) in the first direction relative to the patellar ligament binding beam 2.

[0130] Thus, the tightness adjustment problem of the patellar ligament and the tibial prosthesis 100 can be better solved, thereby further reducing the wear and tear pain caused by uneven force of the patellar ligament.

[0131] Optionally, the diameter of each proximal binding adjustment hole is greater than or equal to 1 millimeter and less than or equal to 10 millimeters. In the embodiment, the diameters of the first outer binding adjustment hole 41, the second outer binding adjustment hole 42, the first inner binding adjustment hole 43 and the second inner binding adjustment hole 44 are also all greater than or equal to 1 millimeter and less than or equal to 10 millimeters. Thus, the patellar ligament can be more easily bound to the binding adjustment hole.

[0132] As shown in Figure 10 , the distance D12 between the first outer binding adjustment hole 41 and the patella center P1 in the first direction is greater than or equal to 20 millimeters and less than or equal to 80 millimeters, and the distance D13 between the first inner binding adjustment hole 43 and the patella center P1 in the first direction is greater than or equal to 20 millimeters and less than or equal to 80 millimeters. Thus, the tightness adjustment problem of the patellar ligament and the tibial prosthesis 100 can be better solved, thereby further reducing the wear and tear pain caused by uneven force of the patellar ligament.

[0133] As shown in Figure 10 , the distance D14 between the second outer binding adjustment hole 42 and the patella center P1 in the first direction is greater than or equal to 30 mm and less than or equal to 100 mm, and the distance D15 between the second inner binding adjustment hole 44 and the patella center P1 in the first direction is greater than or equal to 30 mm and less than or equal to 100 mm. In this way, the tightness adjustment problem of the patellar ligament connected to the tibial prosthesis 100 can be better solved, thereby further reducing the wear and pain caused by uneven stress on the patellar ligament.

[0134] As shown in Figure 9 , the distance D18 between the first outer binding adjustment hole 41 and the tibial joint line L in the first direction is greater than or equal to 5 mm and less than or equal to 40 mm, and the distance D19 between the first inner binding adjustment hole 43 and the tibial joint line L in the first direction is greater than or equal to 5 mm and less than or equal to 40 mm. In this way, the tightness adjustment problem of the patellar ligament connected to the tibial prosthesis 100 can be better solved, thereby further reducing the wear and pain caused by uneven stress on the patellar ligament.

[0135] As shown in Figure 9 , the distance D20 between the second outer binding adjustment hole 42 and the tibial joint line L in the first direction is greater than or equal to 7 mm and less than or equal to 60 mm, and the distance D21 between the second inner binding adjustment hole 44 and the tibial joint line L in the first direction is greater than or equal to 7 mm and less than or equal to 60 mm. In this way, the tightness adjustment problem of the patellar ligament connected to the tibial prosthesis 100 can be better solved, thereby further reducing the wear and pain caused by uneven stress on the patellar ligament.

[0136] As shown in Figure 2 , Figure 3 , Figure 5 , Figures 7-16 , the tibial prosthesis 100 further comprises a first fibula fixation groove 51 and a second fibula fixation groove 52, which are symmetrically arranged in the medial-lateral direction.

[0137] When the tibial prosthesis 100 is installed on the tibia of the left leg, the fibula 200 can be installed in one of the first fibula fixation groove 51 and the second fibula fixation groove 52; when the tibial prosthesis 100 is installed on the tibia of the right leg, the fibula 200 can be installed in the other one of the first fibula fixation groove 51 and the second fibula fixation groove 52. Figure 2 , Figure 3 , Figure 5 , Figures 7-16 As shown in

[0138] By setting the first fibula fixing groove 51 and the second fibula fixing groove 52, the fibula 200 is facilitated to be closely combined with the tibial prosthesis 100, thereby not only increasing the stability of the tibial prosthesis 100, but also helping to reduce the risk of loosening and sinking of the tibial prosthesis 100 after surgery. Moreover, by setting the first fibula fixing groove 51 and the second fibula fixing groove 52, the tibial prosthesis 100 can be installed not only on the tibia of the left leg of the patient, but also on the tibia of the right leg of the patient, thereby further improving the applicability and application range of the tibial prosthesis 100.

[0139] Moreover, by setting the first fibula fixing groove 51 and the second fibula fixing groove 52, the contact area of the fibula 200 and the tibial prosthesis 100 can also be increased, which is beneficial to osseointegration and helps long-term fixation and functional recovery of the tibial prosthesis 100. With the passage of time, bone tissue will grow into the first fibula fixing groove 51 and the second fibula fixing groove 52, further strengthening the connection between the fibula 200 and the tibial prosthesis 100, thereby improving the long-term stability of the tibial prosthesis 100.

[0140] The fibula 200 is one of the main stabilizing structures on the lateral side of the knee joint, and its fixation helps to maintain the overall stability of the knee joint, especially during weight-bearing and movement. As shown in Figure 12 weight-bearing movement is that the upper end of the fibular head contacts the upper end surface 511 (521) of the first fibula fixing groove 51 (second fibula fixing groove 52), and the upper end surface 511 (521) of the first fibula fixing groove 51 (second fibula fixing groove 52) provides weight-bearing.

[0141] Alternatively, the first fibula fixing groove 51 is a triangular recess, and the second fibula fixing groove 52 is a triangular recess. In this way, the first fibula fixing groove 51 and the second fibula fixing groove 52 can have excellent stability and stress transmission capability, thereby making the fibula 200 more closely combined with the tibial prosthesis 100, so as to further increase the stability of the tibial prosthesis 100 and further reduce the risk of loosening and sinking of the tibial prosthesis 100 after surgery. The first fibula fixing groove 51 and the second fibula fixing groove 52 are below the osteotomy surface of the tibial prosthesis 100.

[0142] Moreover, by making the first fibula fixing groove 51 and the second fibula fixing groove 52 triangular recesses, it is also easier to position and fix the fibula 200 during surgery, so that the position and angle of the fibula 200 can be more accurately controlled, the surgery time is reduced, and the success of the surgery is ensured.

[0143] Alternatively, the first fibula fixing groove 51 and the second fibula fixing groove 52 are symmetrically arranged along the medial-lateral direction on both sides of the installation groove 14. In this way, the fibula 200 can be better fixed.

[0144] As shown in Figure 7 and Figure 8As shown, the tibial prosthesis 100 also comprises a plurality of fibula fixation holes 6 which are spaced apart along the first direction. Each set of fibula fixation holes 6 comprises a medial fibula fixation hole 61 and a lateral fibula fixation hole 62 which are symmetrically arranged along the medial-lateral direction.

[0145] The medial fibula fixation hole 61 and the lateral fibula fixation hole 62 each extend along the medial-lateral direction and each penetrates through two side walls 141 of the seating groove 14. The first fibula fixation slot 51 is in communication with the seating groove 14 through the lateral fibula fixation hole 62, and the second fibula fixation slot 52 is in communication with the seating groove 14 through the medial fibula fixation hole 61. In this way, not only can the fibula 200 be more stably fixed, but also the stress can be more evenly distributed between the tibial prosthesis 100 and the bone (tibia), which helps to reduce the risk of stress concentration and fracture.

[0146] In this embodiment, the proximal binding adjustment hole 32, the first outer binding adjustment hole 41, the second outer binding adjustment hole 42, the first inner binding adjustment hole 43, and the second inner binding adjustment hole 44 are all located in the fibula fixation slot, so the above-mentioned adjustment holes can be used not only to bind the ligament but also to bind the fibula 200, serving as fibula fixation.

[0147] When the fibula 200 is installed into the first fibula fixation slot 51, the fibula 200 is fixed by binding with at least one of the proximal binding adjustment hole 32, the first outer binding adjustment hole 41, the second outer binding adjustment hole 42, and the lateral fibula fixation hole 62 according to the situation during the operation. In this way, the stress can be more evenly distributed between the tibial prosthesis 100 and the bone (tibia), which helps to reduce the risk of stress concentration and fracture.

[0148] Specifically, when the fibula 200 is installed into the second fibula fixation slot 52, the fibula 200 is fixed by binding with at least one of the proximal binding adjustment hole 32, the first inner binding adjustment hole 43, the second inner binding adjustment hole 44, and the medial fibula fixation hole 61 according to the situation during the operation. In this way, the stress can be more evenly distributed between the tibial prosthesis 100 and the bone (tibia), which helps to reduce the risk of stress concentration and fracture.

[0149] Furthermore, through the plurality of fibula fixation holes 6, not only is it convenient to bind and fix the fibula 200 during the operation, but also it can better adapt to the bone morphology of different patients. The triangular first fibula fixation slot 51 has strong inclusion, and the doctor can select the appropriate at least one fixation hole for binding and fixing according to factors such as the bone morphology of the patient, the position and size of the tumor, etc., to ensure the best surgical effect and patient comfort. Whether it is a human fibula or an artificial replaced fibula, it can be embedded into the first fibula fixation slot 51 for fixation.

[0150] In addition, the plurality of fixing holes also provide more space and channels for the growth and creeping replacement of bone tissue.

[0151] In this embodiment, the triangular groove design enables the tibial prosthesis 100 to better adapt to the patient's anatomical structure. The doctor can adjust the position of the fibula 200 in the first fibula fixing groove 51 (the second fibula fixing groove 52) according to the specific circumstances of the patient to achieve the best stability and functional recovery effect. In particular, the fibula 200 can be embedded in the first fibula fixing groove 51 (the second fibula fixing groove 52) according to the size of the fibula 200, and then the fibula 200 can be bundled by the plurality of fixing holes (the plurality of fixing holes).

[0152] The triangular groove design plus the surrounding porous bundling and fixing structure simplifies the surgical operation process. The doctor can more easily fix the fibula 200 in the first fibula fixing groove 51 (the second fibula fixing groove 52) without the need for complex additional fixing steps, thereby shortening the operation time and reducing the operation risk.

[0153] Alternatively, the fibula fixing holes 6 and the adjustment holes in the fibula fixing groove can be threaded in shape, so as to fix the fibula 200 to the tibial prosthesis 100 by screwing through the fixing holes (the adjustment holes).

[0154] The application also discloses a knee joint prosthesis 1000. The knee joint prosthesis 1000 comprises the tibial prosthesis 100.

[0155] Correspondingly, the knee joint prosthesis 1000 of the application has the advantages of small friction, low wear, no inflammation and pain, significant reduction of postoperative pain and discomfort, facilitation of patient recovery, good stability, long service life, etc.

[0156] In the description of the application, the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the application and simplifying the description, and does not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the application.

[0157] In addition, the terms "first", "second", etc. are used only to describe different instances, and are not used to indicate or imply relative importance or a number of indications of the technical features indicated. Therefore, the features defined as "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise explicitly specified.

[0158] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected or in communication with each other; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0159] In the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature, which can be direct contact between the first and second features, or indirect contact between the first and second features through an intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature can be directly above or obliquely above the first feature, or only indicate that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature can be directly below or obliquely below the first feature, or only indicate that the horizontal height of the first feature is less than that of the second feature.

[0160] In the present application, the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples. In addition, those skilled in the art can combine and combine different embodiments or examples described in the present specification and the features of different embodiments or examples, without contradiction.

[0161] Although the embodiments of the present application have been shown and described above, it is understood that the above embodiments are exemplary and cannot be construed as limiting the present application, and those skilled in the art can make changes, modifications, replacements and variations to the above embodiments within the scope of the present application.

Claims

1. A tibial prosthesis, characterized in that, The tibial prosthesis includes a patellar ligament attachment surface, a lateral collateral ligament attachment surface, and a medial collateral ligament attachment surface, a surface roughness of at least one of the patellar ligament attachment surface, the lateral collateral ligament attachment surface, and the medial collateral ligament attachment surface is less than or equal to a predetermined value, the surface roughness of the at least one of the patellar ligament attachment surface, the lateral collateral ligament attachment surface, and the medial collateral ligament attachment surface is less than or equal to 0.1 microns, a width of the patellar ligament attachment surface is greater than or equal to 20 millimeters and less than or equal to 70 millimeters, a length of the patellar ligament attachment surface is greater than or equal to 20 millimeters and less than or equal to 150 millimeters, a width of the lateral collateral ligament attachment surface is greater than or equal to 10 millimeters and less than or equal to 60 millimeters, a length of the lateral collateral ligament attachment surface is greater than or equal to 30 millimeters and less than or equal to 200 millimeters, a width of the medial collateral ligament attachment surface is greater than or equal to 10 millimeters and less than or equal to 60 millimeters, and a length of the medial collateral ligament attachment surface is greater than or equal to 30 millimeters and less than or equal to 200 millimeters.

2. The tibial prosthesis of claim 1, wherein, A coronal profile of the lateral collateral ligament attachment surface includes a first lateral straight segment, a lateral curved segment, and a second lateral straight segment connected in sequence, and a coronal profile of the medial collateral ligament attachment surface includes a first medial straight segment, a medial curved segment, and a second medial straight segment connected in sequence, wherein The first lateral straight segment extends in a first direction, and the second lateral straight segment extends in a second direction perpendicular to the first direction and a medial-lateral direction; And / or, a length of the first lateral straight segment is greater than or equal to 1 millimeter and less than or equal to 100 millimeters, and a length of the second lateral straight segment is greater than or equal to 0.5 millimeter and less than or equal to 100 millimeters; And / or, the lateral curved segment includes a first lateral arc segment, a second lateral arc segment, a third lateral arc segment, and a fourth lateral arc segment connected in sequence, the first lateral arc segment is connected with the first lateral straight segment, and the fourth lateral arc segment is connected with the second lateral straight segment, wherein a radius of curvature of the first lateral arc segment is greater than or equal to 1 millimeter and less than or equal to 200 millimeters, a radius of curvature of the second lateral arc segment is greater than or equal to 1 millimeter and less than or equal to 200 millimeters, a radius of curvature of the third lateral arc segment is greater than or equal to 1 millimeter and less than or equal to 1000 millimeters, and a radius of curvature of the fourth lateral arc segment is greater than or equal to 1 millimeter and less than or equal to 200 millimeters; And / or, the first medial straight segment extends in a first direction, and the second medial straight segment extends in the second direction; And / or, a length of the first medial straight segment is greater than or equal to 1 millimeter and less than or equal to 100 millimeters, and a length of the second medial straight segment is greater than or equal to 0.5 millimeter and less than or equal to 100 millimeters; And / or, the inner curve segment comprises a first inner arc segment, a second inner arc segment, a third inner arc segment and a fourth inner arc segment connected in sequence, the first inner arc segment is connected with the first inner straight line segment, the fourth inner arc segment is connected with the second inner straight line segment, wherein the radius of curvature of the first inner arc segment is greater than or equal to 1mm and less than or equal to 200mm, the radius of curvature of the second inner arc segment is greater than or equal to 1mm and less than or equal to 200mm, the radius of curvature of the third inner arc segment is greater than or equal to 1mm and less than or equal to 1000mm, and the radius of curvature of the fourth inner arc segment is greater than or equal to 1mm and less than or equal to 200mm.

3. The tibial prosthesis of claim 2, wherein: The tibial prosthesis further comprises a patellar ligament binding beam and a distal binding adjustment hole, the distal binding adjustment hole is away from the patella center relative to the patellar ligament binding beam in the first direction; And / or, the tibial prosthesis further comprises a patellar ligament binding beam, the center of the patellar ligament binding beam is greater than or equal to 10mm and less than or equal to 50mm away from the tibial joint line in the first direction; And / or, the tibial prosthesis further comprises a patellar ligament binding beam and a proximal binding adjustment hole, the proximal binding adjustment hole is adjacent to the patella center relative to the patellar ligament binding beam in the first direction.

4. The tibial prosthesis of claim 3, wherein: The patellar ligament attachment surface is provided with a mounting groove, and the patellar ligament binding beam spans the groove opening of the mounting groove; And / or, the side of the patellar ligament binding beam close to the patella center is greater than or equal to 20mm and less than or equal to 100mm away from the patella center in the first direction; And / or, the distance between the distal binding adjustment hole and the patella center in the first direction is greater than or equal to 30mm and less than or equal to 200mm; And / or, the distance between the proximal binding adjustment hole and the patella center in the first direction is greater than or equal to 10mm and less than or equal to 60mm; And / or, the size of the patellar ligament binding beam in the medial-lateral direction is greater than or equal to 10mm and less than or equal to 50mm; And / or, the distal binding adjustment hole is a plurality of distal binding adjustment holes, the plurality of distal binding adjustment holes are spaced apart in the medial-lateral direction, and the plurality of distal binding adjustment holes are symmetrically arranged in the medial-lateral direction; And / or, the proximal binding adjustment hole is a plurality of proximal binding adjustment holes, the plurality of proximal binding adjustment holes are spaced apart in the medial-lateral direction, and the plurality of proximal binding adjustment holes are symmetrically arranged in the medial-lateral direction; And / or, the side of the patellar ligament binding beam close to the tibial joint line is greater than or equal to 5mm and less than or equal to 40mm away from the tibial joint line in the first direction; And / or, the distance between the distal binding adjustment hole and the tibial joint line in the first direction is greater than or equal to 10mm and less than or equal to 80mm; And / or, the distance between the proximal binding adjustment hole and the tibial joint line in the first direction is greater than or equal to 1mm and less than or equal to 30mm; And / or, the diameter of each proximal binding adjustment hole is greater than or equal to 1mm and less than or equal to 10mm.

5. The tibial prosthesis of claim 3 wherein, Further comprising a plurality of binding adjustment holes, the plurality of binding adjustment holes comprise: a first outer bundle adjustment hole and a second outer bundle adjustment hole located on the lateral side of the patellar ligament bundle beam and spaced apart along the first direction; and a first inner bundle adjustment hole and a second inner bundle adjustment hole located on the medial side of the patellar ligament bundle beam and spaced apart along the first direction, the first outer bundle adjustment hole and the first inner bundle adjustment hole being symmetrically arranged along the medial-lateral direction, and the second outer bundle adjustment hole and the second inner bundle adjustment hole being symmetrically arranged along the medial-lateral direction.

6. The tibial prosthesis of claim 5, a plurality of the bundle adjustment holes are distanced from the patellar center in the first direction relative to the proximal bundle adjustment hole; and / or, the first outer bundle adjustment hole and the first inner bundle adjustment hole are distanced from the patellar center in the first direction by a distance greater than or equal to 20 mm and less than or equal to 80 mm; and / or, the second outer bundle adjustment hole and the second inner bundle adjustment hole are distanced from the patellar center in the first direction by a distance greater than or equal to 30 mm and less than or equal to 100 mm; and / or, the second outer bundle adjustment hole and the second inner bundle adjustment hole are distanced from the patellar center in the first direction relative to the patellar ligament bundle beam; and / or, the first outer bundle adjustment hole and the first inner bundle adjustment hole are distanced from the tibial articular line in the first direction by a distance greater than or equal to 5 mm and less than or equal to 40 mm; and / or, the second outer bundle adjustment hole and the second inner bundle adjustment hole are distanced from the tibial articular line in the first direction by a distance greater than or equal to 7 mm and less than or equal to 60 mm.

7. The tibial prosthesis of claim 2 wherein, The tibial prosthesis further comprises a first fibular fixation groove and a second fibular fixation groove symmetrically arranged in the medial-lateral direction.

8. The tibial prosthesis of claim 7, the first fibular fixation groove and the second fibular fixation groove are both triangular grooves; and / or, the tibial prosthesis further comprises a patellar ligament bundle beam, the patellar ligament attachment surface is provided with a seating groove, the patellar ligament bundle beam spans the slot opening of the seating groove, and the first fibular fixation groove and the second fibular fixation groove are symmetrically arranged on both sides of the seating groove in the medial-lateral direction.

9. The tibial prosthesis of claim 8 wherein, The tibial prosthesis further comprises a plurality of groups of fibular fixation holes, each group of fibular fixation holes is spaced apart along the first direction, each group of fibular fixation holes comprises a medial fibular fixation hole and a lateral fibular fixation hole symmetrically arranged in the medial-lateral direction, the medial fibular fixation hole and the lateral fibular fixation hole both extend in the medial-lateral direction and respectively penetrate two side walls of the seating groove, the first fibular fixation groove communicates with the seating groove through the lateral fibular fixation hole, and the second fibular fixation groove communicates with the seating groove through the medial fibular fixation hole.

10. A knee prosthesis, characterized in that A tibial prosthesis according to any one of claims 1-9.

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