A personalized tibial platform osteotome

Abstract

The application relates to a personalized tibial plateau osteotome, belonging to the technical field of medical devices, and solves the problems of many matched devices, complicated steps and low efficiency of a traditional osteotome; the personalized tibial plateau osteotome comprises an osteotomy guiding component, a forward positioning plate, an outer platform positioning claw and an inner platform positioning claw; the osteotomy guiding component comprises an osteotomy guiding block and an osteotomy guiding groove; one side of the osteotomy guiding block is provided with a front end face and a front inner end face. According to the three-dimensional model positioning curved surface and the osteotomy plane of the tibia, the application has high matching degree with patients, is accurate in positioning, avoids the situation that the size of an existing osteotome cannot be completely matched, the position of the osteotome is easily deviated from the expectation, and surgical trauma is reduced; the multi-instrument integrated mode of a traditional tibial plateau backward osteotome is avoided, the steps of the operation are optimized, the operation time is shortened, and the harm to the patient is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of medical devices, in particular to a personalized tibial plateau osteotomy device. BACKGROUND

[0002] In knee replacement surgery, in order to ensure sufficient space for tibial tray prosthesis installation and matching cross section with the prosthesis, an osteotomy device is needed to assist in cutting a retroverted osteotomy plane on the top of the tibia. Most of the existing osteotomy devices are designed based on traditional manufacturing technology, and a small number of osteotomy devices integrate 3D printing technology. The former is more mature in design, and the latter is more convenient to use in the operation process.

[0003] However, the existing tibial osteotomy device designed based on traditional technology usually designs a series of size specifications to ensure that the use range meets more patients, which increases the operation of instrument selection during surgery, and the size of the osteotomy device cannot completely match the size of the patient's tibia. In addition, the positioning of this tibial osteotomy device cannot be completed alone, and it usually needs to be assisted by a supporting condylus device, an extramedullary positioner and a measuring plate, etc., which not only increases the operation steps and difficulty, but also increases the production design cost. The existing tibial osteotomy device based on 3D printing technology often has defects such as poor mechanical performance or structural performance compared with the traditional tibial osteotomy device. SUMMARY

[0004] In view of the above analysis, the embodiments of the present application aim to provide a personalized tibial plateau osteotomy device to solve the problems raised in the background art.

[0005] To achieve the above-mentioned purpose, the present application provides the following technical scheme:

[0006] A personalized tibial plateau osteotomy device, comprising an osteotomy guide member, a forward positioning plate, an outer platform positioning claw and an inner platform positioning claw.

[0007] Further, the osteotomy guide member comprises an osteotomy guide block and an osteotomy guide groove; one side of the osteotomy guide block is provided with a front end face and a front inner end face, and the other side of the osteotomy guide block is provided with a rear side end face designed based on a three-dimensional model of the tibia; the rear side end face matches the shape of the tibia; the osteotomy guide block is internally provided with an osteotomy guide groove penetrating through the front end face, the front inner end face and the rear side end face; and the upper and lower planes of the osteotomy guide groove are parallel.

[0008] Further, the forward positioning plate comprises a positioning curved surface block, an outer lateral horizontal fixing hole group, an inner lateral horizontal fixing hole group and an inclined fixing hole group; the positioning curved surface block comprises a positioning curved surface plate and a connecting block, which are fixedly connected, the surface of the positioning curved surface plate is matched with the front surface of the tibia, and the outer lateral horizontal fixing hole group, the inner lateral horizontal fixing hole group and the inclined fixing hole group are arranged in the positioning curved surface block.

[0009] Further, the outer platform positioning claw comprises an outer platform positioning column and an outer platform positioning plate; the outer platform positioning column is in a bent rod structure.

[0010] Further, the inner platform positioning claw comprises an inner platform positioning column and an inner platform positioning plate; the inner platform positioning column is in a bent rod structure.

[0011] Further, an included angle θ1 is formed between the front end surface and the front inner end surface, and 90°>θ1>40°.

[0012] Further, the thickness of the osteotomy guiding groove is H, and 0.2mm>H-oscillating saw thickness>0.03mm.

[0013] Further, the osteotomy guiding block is in a metal thin-wall structure and is composed of four groove walls, i.e., upper, lower, inner and outer groove walls.

[0014] Further, a pointing boss is arranged on the upper groove wall surface of the osteotomy guiding block, and a through chip removal hole is arranged in the lower groove wall of the osteotomy guiding block.

[0015] Further, the surface sharp change of the osteotomy guiding member is in a rounded corner structure.

[0016] Further, the positioning curved surface block further comprises a horizontal through hole; the horizontal through hole is arranged in the positioning curved surface plate, and the horizontal through hole is in an arc shape in cross section.

[0017] Further, the outer lateral horizontal fixing hole group comprises an outer lateral upper fixing hole, an outer lateral middle fixing hole and an outer lateral lower fixing hole; the vertical distance between the outer lateral upper fixing hole and the outer lateral middle fixing hole and the vertical distance between the outer lateral middle fixing hole and the outer lateral lower fixing hole are both 2mm, the outer lateral upper fixing hole and the outer lateral lower fixing hole are located at the same position in the horizontal direction, and the outer lateral middle fixing hole is offset by 3mm from the outer lateral upper fixing hole and the outer lateral lower fixing hole in the horizontal direction.

[0018] Further, the inner side horizontal fixing hole group comprises a lateral upper fixing hole, a lateral middle fixing hole and a lateral lower fixing hole; the vertical distance between the lateral upper fixing hole and the lateral middle fixing hole and the vertical distance between the lateral middle fixing hole and the lateral lower fixing hole are both 2 mm; the lateral upper fixing hole and the lateral lower fixing hole are in the same horizontal position, and the lateral middle fixing hole is offset by 3 mm from the lateral upper fixing hole and the lateral lower fixing hole in the horizontal direction.

[0019] Further, the inclined fixing hole group comprises three through inclined fixing holes arranged obliquely, the three inclined fixing holes are different in direction, and the inclined fixing holes are different in direction from the holes of the outer side horizontal fixing hole group and the inner side horizontal fixing hole group.

[0020] Further, the angles θ2 and θ3 formed between the outer platform positioning column and the inner platform positioning column and the front end face are both not less than 40°.

[0021] Further, the outer platform positioning plate and the inner platform positioning plate are both thin-walled structures.

[0022] Further, the outer platform positioning plate and the inner platform positioning plate are matched with the tibia in the shape of the surface.

[0023] The above technical solution has at least one of the following beneficial effects:

[0024] (1) According to the three-dimensional model of the tibia, the positioning curved surface and the osteotomy plane are matched with the patient, the positioning is accurate, and the size of the existing osteotome cannot be completely matched to avoid the situation that the position of the osteotome deviates from the expected position, relatively fewer screws are used for the traditional osteotome and the existing 3D printed osteotome, and the effect is more excellent; when the inclined fixing hole is used to fix the osteotome, the positioning curved surface plate is more matched with the tibia, and the stability is better, which provides favorable conditions for using fewer screws for fixation and reduces surgical trauma;

[0025] (2) Avoid the multi-instrument integration mode of the traditional tibial plateau retroversion osteotome, without the need for auxiliary devices such as the trochlea holder, the extramedullary positioner and the measuring plate, optimize the steps of the operation, shorten the operation time and reduce the harm to the patient;

[0026] (3) The structure of the osteotome meets the 3D printing design requirements, the positioning curved surface plate is based on the three-dimensional model of the tibia, is obtained through curved surface fitting and stripping, and is specially optimized for 3D printing production, so that the printing effect is excellent and the printing success rate is higher;

[0027] (4) The multi-hole design of the hole group of the outer side horizontal fixing hole group, the inner side horizontal fixing hole group and the inclined fixing hole group facilitates the replacement of the fixing mode and has higher fault tolerance;

[0028] (5) The intersection of the front end face and the front inner end face can realize the forward-to-backward and inner-to-outer feeding operation, greatly improve the amplitude of the swing saw swing, and limit the swing saw through the osteotomy guide blocks on both sides of the osteotomy guide groove, avoid the collision of the cutting instrument with the patellar ligament and other soft tissues, and conveniently and safely perform the osteotomy operation. The design of the rear end face arc is based on the shape of the tibial three-dimensional model, matches the tibial shape, can maximize the extension of the osteotomy groove guide length, and avoids the interference between the groove body and the bone tissue, thereby improving the osteotomy precision;

[0029] (6) The thin-walled structure and the hollow design of the osteotome save the metal raw materials while ensuring the good mechanical properties of the osteotome, reduce the time required for 3D printing, and the design of the chip removal hole saves the raw materials, facilitates the removal of part of the bone debris in the guide groove during the operation, and reduces the influence of the bone debris on the osteotomy precision.

[0030] In the present application, the above technical solutions can be combined with each other to realize more preferred combination schemes. Other features and advantages of the present application will be described in the subsequent specification, and some advantages will become apparent from the specification, or will be understood by implementing the present application. The purpose and other advantages of the present application can be achieved and obtained through the contents specifically indicated in the specification and the drawings. BRIEF DESCRIPTION OF DRAWINGS

[0031] The accompanying drawings are included to provide a further understanding of the embodiments, and are incorporated in and constitute a part of this specification, illustrate embodiments of the application, and together with the description serve to explain the principles of the application, and should not be considered limiting of the present application in scope, as numerous embodiments can be made and equivalents used.

[0032] Figure 1 Structure diagram of the personalized tibial plateau osteotome of the present application Figure 1 .

[0033] Figure 2 Structure diagram of the personalized tibial plateau osteotome of the present application Figure 2 .

[0034] Figure 3 Schematic diagram of the personalized tibial plateau osteotome of the present application and the tibia.

[0035] Figure 4 Front view of the personalized tibial plateau osteotome of the present application.

[0036] Figure 5 Left view of the personalized tibial plateau osteotome of the present application.

[0037] Figure 6 Top view of the personalized tibial plateau osteotome of the present application.

[0038] In the figure: 1. osteotomy guide member, 2. forward positioning plate, 3. outer platform positioning claw, 4. inner platform positioning claw, 11. osteotomy guide block, 12. osteotomy guide groove, 13. front end surface, 14. front inner end surface, 15. rear side end surface, 16. pointing boss, 17. bone removal hole, 21. positioning curved surface block, 211. positioning curved surface plate, 212. connecting block, 22. outer side horizontal fixing hole group, 23. inner side horizontal fixing hole group, 24. inclined fixing hole group, 25. horizontal through hole, 31. outer platform positioning column, 32. outer platform positioning plate, 41. inner platform positioning column, 42. inner platform positioning plate, 51. tibial surface, 52. tibial lateral protuberance structure, 53. tibial medial protuberance structure, 54. tibial protuberance structure center, 311. outer side upward rod, 312. outer side backward inclined rod, 313. outer side vertical rod, 411. inner side upward rod, 412. inner side backward inclined rod, 313. inner side vertical rod. DETAILED DESCRIPTION

[0039] The preferred embodiments of the present application will be described in detail below with reference to the drawings, wherein the drawings constitute a part of this application and illustrate the principles of the present application together with the embodiments thereof, but are not intended to limit the scope of the present application.

[0040] Example 1

[0041] In one specific embodiment of the present application, a personalized tibial plateau osteotomy device is disclosed, as shown in the figure, which comprises an osteotomy guide member 1, a forward positioning plate 2, an outer platform positioning claw 3 and an inner platform positioning claw 4. Figure 1

[0042] The tibial plateau osteotomy device is made based on laser metal 3D printing technology; the osteotomy guide member 1 is made based on the surface shape of the tibial surface 51, adopts a thin-walled structure, and is used to guide the cutting of the bone surface by a swing saw; the forward positioning plate 2 is also made based on the surface shape of the tibial surface 51, adopts a thin-walled structure, and is used to realize the fitting of the tibia and the tibial plateau osteotomy device, and plays a fixing role; the outer platform positioning claw 3 and the inner platform positioning claw 4 are made based on the tibial lateral protuberance structure 52 and the tibial medial protuberance structure 53, adopt a thin-walled structure, and the outer platform positioning claw 3 and the inner platform positioning claw 4 play a positioning and certain fixing role, and the fixing role mainly reflects the simple fixing before the forward positioning plate 2 is not fixed with the tibia by a screw; the wall thickness of the thin-walled structure is 1 to 3 mm, which maximally reduces the volume of the parts and reduces the material loss in the printing process on the premise of ensuring the function and mechanical properties.

[0043] Preferably, as shown in the figure, the osteotomy guide member 1 comprises an osteotomy guide block 11 and an osteotomy guide groove 12. Figure 2 ​As shown, the osteotomy guide member 1 comprises an osteotomy guide block 11 and an osteotomy guide groove 12; one side of the osteotomy guide block 11 is provided with a front end face 13 and a front inner end face 14, and the other side of the osteotomy guide block 11 is provided with a rear end face 15 designed based on a three-dimensional model of a tibia; the rear end face 15 matches the shape of the tibia; the osteotomy guide block 11 is internally provided with the osteotomy guide groove 12 penetrating through the front end face 13, the front inner end face 14 and the rear end face 15; and the upper and lower planes of the osteotomy guide groove 12 are parallel.

[0044] The osteotomy guide groove 12 is determined according to the thickness of the saw blade, and the preferred design parameter is that the thickness of the saw blade is increased by 0.03-0.2 mm; in this embodiment, the thickness of the saw blade is 1.3 mm, and the thickness H of the osteotomy guide groove 12 is designed to be 1.35 mm; wherein the end face of the groove in the osteotomy guide groove 12 is chamfered to increase the thickness H of the entrance of the swing saw, facilitating the swing saw to enter; the intersection of the front end face 13 and the front inner end face 14 can realize the infeed operation from front to back and from inside to outside, greatly improving the swing range of the swing saw; the front end face 13 and the front inner end face 14 are both located on the infeed side during the osteotomy operation, and the front end face 13 is parallel to the front face 51 of the tibia; when performing laser metal 3D printing, the front end face 13 is preferably in contact with the printer substrate, which is more conducive to the one-piece molding of 3D printing; the rear end face 15 is located on the outfeed side during the osteotomy operation, and the design of the rear end face 15 is used to install the osteotomy guide block 11 along the periphery of the tibia without directly contacting the tibia, thereby avoiding interference with the tibia.

[0045] Preferably, as shown in Figure 4 and Figure 5 As shown, the forward positioning plate 2 comprises a positioning curved surface block 21, an outer side horizontal fixed hole group 22, an inner side horizontal fixed hole group 23 and an inclined fixed hole group 24; the positioning curved surface block 21 comprises a positioning curved surface plate 211 and a connecting block 212, which are fixedly connected, and the surface of the positioning curved surface plate 211 matches the front face 51 of the tibia; the positioning curved surface block 21 is internally provided with the outer side horizontal fixed hole group 22, the inner side horizontal fixed hole group 23 and the inclined fixed hole group 24.

[0046] As shown in Figure 3 The positioning curved surface block 21 is used to determine the relative position of the osteotomy guide member 1 and fix the osteotomy guide member 1, wherein the positioning curved surface plate 211 is obtained by surface fitting and stripping based on a three-dimensional model of the tibia, and can match the front face 51 of the tibia; the connecting block 212 is used to connect the positioning curved surface plate 211 and the osteotomy guide member 1.

[0047] Preferably, as shown in Figure 6As shown, the outer platform positioning claw 3 comprises an outer platform positioning column 31 and an outer platform positioning plate 32; the outer platform positioning column 31 is a bent rod structure.

[0048] Preferably, the inner platform positioning claw 4 comprises an inner platform positioning column 41 and an inner platform positioning plate 42; the inner platform positioning column 41 is a bent rod structure.

[0049] The outer platform positioning column 31 and the inner platform positioning column 41 are preferably three-bent structures.

[0050] The outer platform positioning column 31 comprises an outer side up-lift rod 311, an outer side back-tilt rod 312 and an outer side vertical rod 313; the outer side up-lift rod 311, the outer side back-tilt rod 312 and the outer side vertical rod 313 are connected in sequence, the outer side up-lift rod 311 and the outer side back-tilt rod 312 form an arched obtuse angle, which is higher than the bone structure and osteophytes of the anterior edge of the tibial platform, the length of the outer side vertical rod 313 is personalized designed according to the degree of platform depression, the outer side up-lift rod 311 is connected with the osteotomy guiding member 1, and the outer side vertical rod 313 is connected with the outer platform positioning plate 32.

[0051] The inner platform positioning column 41 comprises an inner side up-lift rod 411, an inner side back-tilt rod 413 and an inner side vertical rod 413; the inner side up-lift rod 411, the inner side back-tilt rod 413 and the inner side vertical rod 413 are connected in sequence, the inner side up-lift rod 411 and the inner side back-tilt rod 412 form an arched obtuse angle, which is higher than the bone structure and osteophytes of the anterior edge of the tibial platform, the length of the inner side vertical rod 413 is personalized designed according to the degree of platform depression, the inner side up-lift rod 411 is connected with the osteotomy guiding member 1, and the inner side vertical rod 413 is connected with the outer platform positioning plate 42.

[0052] The outer side up-lift rod 311 and the outer side back-tilt rod 312 form an arched obtuse angle, which can avoid interference with the bone tissue and osteophyte structure of the anterior edge of the platform, and the included angle θ2 and θ3 are not less than 40° for facilitating direct printing. Figure 3

[0053] Preferably, an included angle θ1 is formed between the front end face 13 and the front inner end face 14, and 90°>θ1>40°.

[0054] The setting of θ1 greater than 40° is used for facilitating the integral molding of laser metal 3D printing and improving the printing effect.

[0055] Preferably, the thickness of the osteotomy guiding groove 12 is H, and 0.2mm>H-oscillating saw thickness>0.03mm.

[0056] Preferably, the osteotomy guiding block 11 is a metal thin-walled structure, which is composed of four groove walls of upper, lower, inner and outer.

[0057] ​Preferably, the upper groove wall surface of the osteotomy guide block 11 is provided with a pointing boss 16, and a through bone debris removal hole 17 is formed in the lower groove wall of the osteotomy guide block 11.

[0058] The pointing boss 16 is used to indicate front and back, and the pointing boss 16 points to the tibial eminence structure center 54; the bone debris removal hole 17 is rectangular, and the bone debris removal hole 17 is used to reduce the consumption of processed materials, reduce the weight of the product, and reduce the generation of heat during printing, and at the same time, the bone debris in the osteotomy guide groove 12 can be removed during the operation, and the influence of the bone debris on the osteotomy accuracy is reduced.

[0059] Preferably, the surface sharp change of the osteotomy guide member 1 is chamfered.

[0060] The chamfering processing enhances the comfort of the osteotomy guide member 1 when holding.

[0061] Preferably, the positioning curved surface block 21 further comprises a horizontal through hole 25; the horizontal through hole 25 is formed in the inside of the positioning curved surface plate 211, and the cross section of the horizontal through hole 25 is arc-shaped.

[0062] The arrangement of the horizontal through hole 25 greatly reduces the mass of the positioning curved surface block 21 and reduces the generation of heat during printing.

[0063] Preferably, the outer side horizontal fixing hole group 22 comprises an outer side upper fixing hole, an outer side middle fixing hole, and an outer side lower fixing hole; the distance between the outer side upper fixing hole and the outer side middle fixing hole, and the distance between the outer side middle fixing hole and the outer side lower fixing hole in the vertical direction are both 2mm, the outer side upper fixing hole and the outer side lower fixing hole are located at the same position in the horizontal direction, and the outer side middle fixing hole is offset by 3mm from the outer side upper fixing hole and the outer side lower fixing hole in the horizontal direction.

[0064] Preferably, the inner side horizontal fixing hole group 23 comprises a lateral upper fixing hole, a lateral middle fixing hole, and a lateral lower fixing hole; the distance between the lateral upper fixing hole and the lateral middle fixing hole, and the distance between the lateral middle fixing hole and the lateral lower fixing hole in the vertical direction are both 2mm, the lateral upper fixing hole and the lateral lower fixing hole are located at the same position in the horizontal direction, and the lateral middle fixing hole is offset by 3mm from the lateral upper fixing hole and the lateral lower fixing hole in the horizontal direction.

[0065] The outer side horizontal fixing hole group 22 and the lateral horizontal fixing hole group 23 are first fixed by screwing into the outer side lower fixing hole and the lateral lower fixing hole after the osteotome is positioned, if the tibial osteotomy thickness is less than expected, the osteotome can be removed along the screw, and the outer side upper fixing hole and the lateral upper fixing hole or the outer side middle fixing hole and the lateral middle fixing hole are sleeved on the screw for re-fixing.

[0066] Preferably, the inclined fixing hole group 24 includes three through inclined fixing holes arranged obliquely, the three inclined fixing holes have different orientations, and the orientations of the inclined fixing holes are different from the orientations of the holes of the outer horizontal fixing hole group 22 and the inner horizontal fixing hole group 23.

[0067] After the osteotome is fixed along the outer horizontal fixing hole group 22 and the inner horizontal fixing hole group 23, there is still space for translation along the center line direction of the hole group, and one to three inclined fixing holes in the inclined fixing hole group 24 are selected for final fixation. The number of the selected inclined fixing holes for fixation is more determined by the on-site adjustment of the operator.

[0068] The osteotome uses at least three screws to fix the position of the osteotomy guide groove 12, which is less than the number of screws used in the traditional osteotome and the existing 3D printed osteotome, and the effect is better. The positioning curved surface plate 211 is obtained by surface fitting and stripping based on the three-dimensional model of the tibia, and can match the front surface 51 of the tibia. When the osteotome is fixed by using the inclined fixing hole, the positioning curved surface plate 211 has higher adhesion to the tibia and better stability, which provides favorable conditions for fixing with fewer screws.

[0069] Preferably, the angles θ2 and θ3 formed between the outer platform positioning column 31 and the inner platform positioning column 41 and the front end surface 13 are not less than 40°.

[0070] The design that θ2 and θ3 are not less than 40° facilitates direct printing.

[0071] Preferably, the outer platform positioning plate 32 and the inner platform positioning plate 42 are thin-walled structures.

[0072] Preferably, the outer platform positioning plate 32 and the inner platform positioning plate 42 have a shape matching the tibia.

[0073] The outer platform positioning plate 32 matches the surface of the lateral protruding structure 52 of the tibia, and the inner platform positioning plate 42 matches the surface of the medial protruding structure 53 of the tibia. The matching surfaces are derived from a three-dimensional model obtained by scientific and technological means.

[0074] A use method of the personalized tibial plateau osteotome, and the specific steps include:

[0075] Step 1: expose the tibia

[0076] Step 2: align the pointing boss 16 with the tibial tuberosity;

[0077] Step 3: adhere the positioning curved surface block 21 to the front surface 51 of the tibia, and move the osteotome downward to adhere the outer platform positioning plate 32 and the inner platform positioning plate 42 to the lateral protruding structure 52 of the tibia and the medial protruding structure 53 of the tibia;

[0078] Step 4: Adjust the position of the osteotome to feel the osteotome and the tibia match completely;

[0079] Step 5: Screw 1 screw into the lateral lower fixation hole and the lateral lower fixation hole respectively;

[0080] Step 6: Select 1-3 inclined fixation holes in the inclined fixation hole group 24 for fixation;

[0081] Step 7: Use the swing saw to cut the bone along the osteotomy guide groove 12;

[0082] Step 8: Check whether the osteotomy thickness meets the surgical requirements;

[0083] Step 9: If the requirements are met, skip this step, if the osteotomy thickness does not meet the requirements, remove the screws in the inclined fixation holes, remove the osteotome along the screws at the lateral lower fixation hole and the lateral lower fixation hole, move the osteotome down by 2mm, replace a set of fixation holes, fix them on the screws and repeat steps 6-8;

[0084] Step 10: After the osteotomy thickness meets the surgical requirements of the tibial prosthesis installation, remove the screws and complete the surgery.

[0085] The above is only the preferred specific embodiment of the present application, but the protection scope of the present application is not limited to this, any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.

Claims

1. A personalized tibial platform osteotome, characterized in that, The tibial plateau osteotomy guide comprises a tibial plateau osteotomy guide member, a forward positioning plate, an outer platform positioning claw and an inner platform positioning claw; the tibial plateau osteotomy guide member comprises a tibial plateau osteotomy guide block, one side of the tibial plateau osteotomy guide block is provided with a front end surface and a front inner end surface, an included angle θ1 is formed between the front end surface and the front inner end surface, and 90°> θ1 > 40°; the forward positioning plate comprises a positioning curved surface block, an outer side horizontal fixing hole group, an inner side horizontal fixing hole group and an inclined fixing hole group, the positioning curved surface block comprises a positioning curved surface plate and a connecting block, the positioning curved surface plate and the connecting block are fixedly connected, the surface of the positioning curved surface plate is matched with the front surface of the tibia, the positioning curved surface block is internally provided with the outer side horizontal fixing hole group, the inner side horizontal fixing hole group and the inclined fixing hole group, the inclined fixing hole group comprises three through inclined fixing holes arranged in a slanting direction, the three inclined fixing holes are different in direction, and the inclined fixing holes are different in direction from the outer side horizontal fixing hole group and the inner side horizontal fixing hole group; the positioning curved surface block further comprises a horizontal through hole, the horizontal through hole is arranged in the positioning curved surface plate, and the horizontal through hole is in an arc shape in cross section.

2. The personalized tibial platform osteotome of claim 1, wherein, The tibial plateau osteotomy guide further comprises a tibial plateau osteotomy guide groove; the other side of the tibial plateau osteotomy guide block is provided with a rear side end surface designed based on a three-dimensional model of the tibia, the rear side end surface is matched with the outer shape of the tibia, the tibial plateau osteotomy guide block is internally provided with a tibial plateau osteotomy guide groove penetrating through the front end surface, the front inner end surface and the rear side end surface, and the upper and lower planes of the tibial plateau osteotomy guide groove are parallel.

3. The personalized tibial platform osteotome of claim 1, wherein, The outer platform positioning claw comprises an outer platform positioning column and an outer platform positioning plate; the outer platform positioning column is in a bent rod structure.

4. The personalized tibial platform osteotome of claim 1, wherein, The inner platform positioning claw comprises an inner platform positioning column and an inner platform positioning plate; the inner platform positioning column is in a bent rod structure.

5. The personalized tibial platform osteotome of claim 2, wherein, The tibial plateau osteotomy guide block is in a metal thin-wall structure and is composed of four groove walls, i.e., an upper groove wall, a lower groove wall, an inner groove wall and an outer groove wall.

6. The tibial plateau osteotomy guide according to claim 2, wherein a pointing boss is arranged on the surface of the upper groove wall of the tibial plateau osteotomy guide block, and a through debridement hole is arranged in the lower groove wall of the tibial plateau osteotomy guide block.

7. The personalized tibial platform osteotome of claim 1, wherein, The sharp change in the surface of the tibial plateau osteotomy guide member is in a rounded corner structure.

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