Hip joint prosthesis system

Abstract

The invention discloses a hip joint prosthesis system, and relates to the technical field of medical instruments. The hip joint prosthesis system comprises a main prosthesis which is arranged at a bone resection position; the connecting prosthesis is arranged between the acetabulum and the main prosthesis; the hook plate is detachably arranged on the main prosthesis through a connecting assembly, and the inner wall of the hook plate is used for being attached to the outer wall of the greater trochanter; the broach is fixedly arranged at the bottom of the main prosthesis, and the broach is used for being inserted into a medullary cavity; the adjusting assembly is used for adjusting the diameter of the broach. A large number of specifications and different types of prostheses and different instruments for implantation do not need to be prepared in advance, the operation time is shortened, the exposure time of a patient is prevented from being too long, complications such as infection and thrombus are reduced, the bone retention amount in a medullary cavity is greatly increased, the fixing stability of the prostheses after long-time use is prevented from being reduced, and the use safety of the prostheses is improved. Therefore, according to the hip joint prosthesis system, the suitability of the hip joint prosthesis is improved under the condition that a patient is not affected.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and in particular to a hip joint prosthesis system. Background Technology

[0002] With the development of total hip arthroplasty (the hip joint is a ball-and-socket joint formed by the femoral head and the acetabulum), it is currently one of the most effective clinical methods for some common hip joint diseases (such as osteoarthritis, femoral head necrosis, rheumatoid arthritis, etc., which can be divided into two scenarios: preserving the greater trochanter of the femur and removing the greater trochanter of the femur) as well as diseases such as hip joint tumors.

[0003] Current clinical methods require preoperative diagnosis and prediction of the location and size of the femur to be removed based on the patient's CT scans. This allows for the fabrication and preparation of multiple prostheses of different sizes and models for implantation. Furthermore, since different patients have varying femoral sizes and medullary canal diameters, a large number of different prostheses of varying specifications are often needed during surgery. Intraoperative selection is then necessary (adjustments may be made based on existing conditions requiring bone removal). Additionally, different types and sizes of prostheses require different instruments for matching, significantly increasing the workload of preoperative preparation. Combined with post-anatomical measurements, prosthesis selection, and proficiency in instrument use, this greatly prolongs the surgical time and increases the patient's exposure time, increasing the risk of complications such as infection and thrombosis.

[0004] Furthermore, in clinical surgery, because the size of the prepared prosthesis cannot perfectly match the patient's medullary canal, it is necessary to process and remove bone from the inner wall of the medullary canal to fit the prosthesis's pin and achieve a stable implantation. However, this involves removing a large amount of cancellous bone (cancellous bone is an important type of bone tissue, composed of several layers of irregular bone plates forming needle-like or sheet-like trabeculae, which interweave to form a porous three-dimensional mesh-like structure), which will greatly affect the fixation stability of the prosthesis after long-term use. The significant amount of bone removed also impacts subsequent rehabilitation. Therefore, there is an urgent need for a hip joint prosthesis that offers extremely high adaptability without compromising the patient's well-being. Summary of the Invention

[0005] In view of the deficiencies in the existing technology, the technical problem solved by the present invention is: how to improve the fit of hip joint prostheses without affecting the patient.

[0006] To achieve the above objectives, the present invention provides a hip joint prosthesis system comprising: The main prosthesis is placed at the site of bone resection; The connecting prosthesis is positioned between the acetabulum and the main prosthesis; The hook plate, which is detachably mounted on the main prosthesis via a connecting assembly, has an inner wall that fits against the outer wall of the greater trochanter. The medullary needle is fixedly installed at the bottom of the main prosthesis and is used to insert into the medullary cavity. Adjustment component, used to adjust the diameter of the spinal needle.

[0007] By employing the above-mentioned technical solution, after surgically removing part of the femur, the main prosthesis is installed at the bone resection site. This is achieved by inserting a medullary nail at the bottom of the main prosthesis into the medullary canal of the femur; at this point, the outer diameter of the nail is smaller than the inner diameter of the medullary canal. The outer diameter of the nail is gradually increased by adjusting the assembly, so that the outer wall of the nail abuts against the inner wall of the medullary canal, thus fixing the main prosthesis. This procedure does not require bone removal from the inner wall of the medullary canal. One end of the connecting prosthesis is connected to the main prosthesis, and the other end is connected to the acetabulum to replace the original femoral neck and femoral head, restoring the patient's hip joint function. In surgical scenarios that preserve the greater trochanter of the femur, the inner wall of the hook plate is fitted against the outer wall of the greater trochanter. After adjustment, the hook plate is fixed to the main prosthesis via the connecting components. The hook plate and the main prosthesis clamp the greater trochanter, thereby further improving the stability of the fixation between the prosthesis and the original bone. In the above operation, it is not necessary to prepare a large number of different types of prostheses and different instruments for implantation in advance. Only one set of prosthesis and one set of implantation instruments are needed during the operation, which shortens the operation time, avoids the patient's exposure time being too long, reduces the occurrence of complications such as infection and thrombosis, and greatly improves the amount of bone preserved in the medullary cavity, avoiding the reduction of fixation stability after long-term use of the prosthesis. Therefore, this hip joint prosthesis system improves the adaptability of the hip joint prosthesis without affecting the patient.

[0008] In one embodiment, the adjustment assembly includes a fixing assembly and an enlarging core. The main prosthesis has a moving channel extending along the path of the medullary cavity. The fixing assembly is fixed to the bottom of the moving channel. The medullary needle includes two C-shaped plates. The top of the C-shaped plates is fixedly connected to the bottom of the fixing assembly. The fixing assembly has a moving groove extending along the opening direction of the moving channel. The enlarging core is movably disposed inside the moving groove, and the diameter of the enlarging core gradually increases from one end to the other.

[0009] By adopting the above technical solution, the enlarged core gradually extends into the medullary needle. As the diameter of the enlarged core gradually increases from one end to the other, it gradually expands the two C-shaped plates, thereby gradually increasing the diameter of the medullary needle.

[0010] In one embodiment, the internal part of the spinal needle is provided with a snap-fit ​​assembly, which includes a first snap-fit ​​member and a second snap-fit ​​member. The first snap-fit ​​member is disposed on the inner wall of a C-shaped plate, and the second snap-fit ​​member is disposed on the inner wall of another C-shaped plate.

[0011] By adopting the above technical solution, the separation of the two C-plates is avoided before the prosthesis is fixed to the bone, which would lead to wear of the C-plates or affect the insertion of the medullary needle into the medullary cavity. Therefore, the two C-plates are kept together in the initial state by the snapping between the first snapping member and the second snapping member.

[0012] In one embodiment, the first and second snap-fit ​​pieces abut against the outer wall of the enlarged core to separate the two C-shaped plates.

[0013] By adopting the above technical solution, the first and second snap-fit ​​components can not only keep the two C-shaped plates together in the initial state, but also, after the enlarged core gradually extends into the medullary needle, the enlarged core will abut against the first and second snap-fit ​​components, thereby moving the first and second snap-fit ​​components away from each other, so as to achieve the enlargement of the medullary needle diameter.

[0014] In one embodiment, the outer wall of the C-shaped plate is provided with a bone ingrowth layer, and the surface of the bone ingrowth layer is provided with a plurality of bone ingrowth holes.

[0015] By adopting the above technical solution, a bone ingrowth layer is set between the outer wall of the C-plate and the inner wall of the medullary cavity, which promotes the extension of bone tissue into the bone ingrowth hole, thereby further enhancing the stability of the fixation between the prosthesis and the bone.

[0016] In one embodiment, the connecting assembly includes a first binding wire, and multiple grooves are formed on the outer side of the hook plate. The hook plate is fixed to the main prosthesis by the first binding wire, and a portion of the first binding wire is located inside the grooves.

[0017] By adopting the above technical solution, multiple first binding wires can be tied between the hook plate and the main prosthesis according to the fixation requirements. The first binding wires are tied inside the groove of the hook plate, thereby preventing the first binding wires from shifting. Therefore, the above design can further enhance the stability of the fixation between the prosthesis and the bone.

[0018] In one embodiment, the connecting prosthesis has a through hole, and the hook plate is fixed to the connecting prosthesis by a second binding wire. Part of the second binding wire is located inside the groove, and part of the second binding wire is located inside the through hole.

[0019] By adopting the above technical solution, the second binding wire not only further enhances the stability of the fixation between the prosthesis and the bone, but also allows for the selection of grooves on the hook plate to bind the second binding wire according to the curve of the greater trochanter of different patients, thereby allowing the greater trochanter to bend slightly and achieving a better fit between the hook plate and the greater trochanter.

[0020] In one embodiment, the connecting assembly further includes screws, and the hook plate is fixedly connected to the large trochanter by the screws.

[0021] By adopting the above technical solutions, the stability of the fixation between the prosthesis and the bone is enhanced.

[0022] In one embodiment, one end of the screw is disposed on the hook plate, and the other end of the screw extends into the interior of the connecting prosthesis.

[0023] By adopting the above technical solution, the screw penetrates the hook plate, greater trochanter, main prosthesis and connecting prosthesis, thereby further enhancing the stability of the fixation between the prosthesis and bone.

[0024] In one embodiment, the inner wall of the hook plate is provided with a convex cone.

[0025] By adopting the above technical solution, before fixing the hook plate to the main prosthesis through the connecting component, the hook plate needs to be fitted to the preset position on the greater trochanter to avoid the hook plate deviating from the preset position during the subsequent implantation process. Therefore, a convex cone is set on the hook plate, and the tip of the convex cone is implanted into the greater trochanter to avoid displacement of the hook plate.

[0026] In summary, the present invention has at least one of the following beneficial technical effects: 1. The main prosthesis is installed at the bone resection site, specifically by inserting the medullary nail at the bottom of the main prosthesis into the medullary canal of the femur. At this point, the outer diameter of the nail is smaller than the inner diameter of the medullary canal. The outer diameter of the nail is gradually increased by adjusting the fittings until its outer wall abuts against the inner wall of the medullary canal, thus fixing the main prosthesis in place. This procedure does not require bone resection of the medullary canal wall. One end of the connecting prosthesis is connected to the main prosthesis, and the other end is connected to the acetabulum to replace the original femoral neck and head, restoring hip joint function. In surgical scenarios that preserve the greater trochanter, the inner wall of the hook plate is aligned with the outer wall of the greater trochanter. After adjustment, the connecting... The component fixes the hook plate to the main prosthesis, and the hook plate and the main prosthesis clamp the greater trochanter, thereby further improving the stability of the fixation between the prosthesis and the original bone. In the above operation, it is not necessary to prepare a large number of different types of prostheses and different instruments for implantation in advance. Only one set of prosthesis and one set of implantation instruments are needed during the operation, which shortens the operation time, avoids the patient's exposure time, reduces the occurrence of complications such as infection and thrombosis, and greatly improves the amount of bone preserved in the medullary cavity, avoiding the reduction of fixation stability after long-term use of the prosthesis. Therefore, this hip joint prosthesis system improves the adaptability of the hip joint prosthesis without affecting the patient. 2. By adjusting the specific design of the components and the medullary needle, the first and second locking parts can not only keep the two C-shaped plates together in the initial state, but also, after the enlarging core gradually extends into the medullary needle, the enlarging core will abut against the first and second locking parts, thereby moving the first and second locking parts away from each other, so as to increase the diameter of the medullary needle. 3. Through the specific design of the hook plate and the second binding wire, the second binding wire not only further enhances the stability of the fixation between the prosthesis and the bone, but also allows the groove on the hook plate to be used to bind the second binding wire according to the curve of the greater trochanter of different patients, thereby allowing the greater trochanter to bend slightly and achieve a better fit between the hook plate and the greater trochanter. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the hip joint prosthesis system according to an embodiment of the present invention (hidden bone ingrowth layer). Figure 2 for Figure 1 Front view (with screws hidden); Figure 3 This is a schematic diagram of the structure of the medullary needle in an embodiment of the present invention (the enlarged core is not inserted). Figure 4 This is a schematic diagram of the structure of the medullary needle in an embodiment of the present invention (with enlarged core inserted). Figure 5 This is a schematic diagram of the snap-fit ​​assembly according to an embodiment of the present invention.

[0028] In the diagram: 1-Main prosthesis, 2-Connecting prosthesis, 201-Through hole, 3-Hook plate, 4-Connecting assembly, 401-First binding wire, 402-Groove, 5-Medullary needle, 501-C-type plate, 6-Adjusting assembly, 601-Fixed assembly, 602-Expanding core, 7-Screw, 8-Second binding wire, 9-Convex cone, 10-Bone ingrowth layer, 11-First retainer, 12-Second retainer. Detailed Implementation

[0029] The embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.

[0030] The hip joint prosthesis system in this embodiment of the invention, see [link to relevant documentation]. Figure 1-4 As shown, the hip joint prosthesis system includes a main prosthesis 1, which is located at the bone resection site; a connecting prosthesis 2, which is located between the acetabulum and the main prosthesis 1; a hook plate 3, which is detachably mounted on the main prosthesis 1 via a connecting assembly 4, the inner wall of the hook plate 3 being used to conform to the outer wall of the greater trochanter; a medullary needle 5, which is fixedly mounted at the bottom of the main prosthesis 1, and is used to insert into the medullary cavity; and an adjustment assembly 6, which is used to adjust the diameter of the medullary needle 5.

[0031] Therefore, it can be seen that after surgically removing part of the femur, the main prosthesis 1 is installed at the bone resection site, that is, the medullary nail 5 at the bottom of the main prosthesis 1 is inserted into the medullary cavity of the femur. At this time, the outer diameter of the medullary nail 5 is smaller than the inner diameter of the medullary cavity. The outer diameter of the medullary nail 5 is gradually increased by adjusting the component 6 so that the outer wall of the medullary nail 5 abuts against the inner wall of the medullary cavity, thereby fixing the main prosthesis 1. This operation does not require the removal of bone from the inner wall of the medullary cavity. One end of the connecting prosthesis 2 is connected to the main prosthesis 1, and the other end of the connecting prosthesis 2 is connected to the acetabulum to replace the original femoral neck and femoral head, restoring the patient's hip joint function. In surgical scenarios that preserve the greater trochanter of the femur, the inner wall of the hook plate 3 is attached to the outer wall of the greater trochanter. After adjustment, the hook plate 3 is fixed to the main prosthesis 1 via the connecting component 4. The hook plate 3 and the main prosthesis 1 clamp the greater trochanter, thereby further improving the stability of the fixation between the prosthesis and the original bone. In the above operation, it is not necessary to prepare a large number of different types of prostheses and different instruments for implantation in advance. Only one set of prosthesis and one set of implantation instruments are needed during the operation, which shortens the operation time, avoids the patient's exposure time being too long, reduces the occurrence of complications such as infection and thrombosis, and greatly improves the amount of bone preserved in the medullary cavity, avoiding the reduction of fixation stability after long-term use of the prosthesis. Therefore, this hip joint prosthesis system improves the adaptability of the hip joint prosthesis without affecting the patient.

[0032] It should be noted that in the case of amputation of the greater trochanter of the femur, the hook plate 3 and the connecting component 4 can be removed from the connecting prosthesis 2.

[0033] Preferred, see Figure 1 , Figure 2 As shown, a specific structure of the adjustment component 6 is provided: The adjustment component 6 includes a fixing component 601 and an enlarging core 602. The main prosthesis 1 has a moving channel extending along the path of the medullary cavity. The fixing component 601 is fixed to the bottom of the moving channel. The medullary needle 5 includes two C-shaped plates 501. The top of the C-shaped plates 501 is fixedly connected to the bottom of the fixing component 601. The fixing component 601 has a moving groove extending along the opening direction of the moving channel. The enlarging core 602 is movably disposed inside the moving groove, and the diameter of the enlarging core 602 gradually increases from one end to the other.

[0034] Specifically, the top of the resilient C-shaped plate 501 is fixed to the bottom of the fixing component 601. The cross-section of the two C-shaped plates 501 joined together is circular. The enlarging core 602 is movably disposed inside the moving groove of the fixing component 601. Since the fixing component 601 is fixed to the bottom of the moving channel, the enlarging core 602 can move along the opening direction of the moving channel. Therefore, after the enlarging core 602 moves a certain distance towards the bottom of the fixing component 601, it will extend between the two C-shaped plates 501, and the length of extension gradually increases. Since the diameter of the enlarging core 602 gradually increases from bottom to top, and the diameter of one part of the enlarging core 602 will be larger than the diameter of the circle formed by the two C-shaped plates 501, the two C-shaped plates 501 are pushed open to both sides, thereby achieving the effect of gradually enlarging the diameter of the spinal needle 5.

[0035] Further, see Figure 5 As shown, the internal part of the spinal needle 5 is provided with a snap-fit ​​assembly, which includes a first snap-fit ​​member 11 and a second snap-fit ​​member 12. The first snap-fit ​​member 11 is disposed on the inner wall of a C-shaped plate 501, and the second snap-fit ​​member 12 is disposed on the inner wall of another C-shaped plate 501.

[0036] Specifically, before the prosthesis is fixed to the bone, to prevent the two C-plates 501 from separating, causing wear of the C-plates 501, or during the operation, the two C-plates 501 not being completely aligned, preventing them from being inserted into the medullary cavity simultaneously and affecting the insertion of the medullary needle 5 into the medullary cavity, the two C-plates 501 are kept aligned in the initial state through the snapping between the first snapping member 11 and the second snapping member 12. The first snapping member 11 and the second snapping member 12 are both relatively designed arc plates. When the first snapping member 11 and the second snapping member 12 are spliced, there is friction between them, thereby achieving the effect of keeping the two C-plates 501 aligned in the initial state.

[0037] Furthermore, the first snap-fit ​​11 and the second snap-fit ​​12 abut against the outer wall of the enlarged core 602 to separate the two C-shaped plates 501.

[0038] Specifically, the first function of the first locking member 11 and the second locking member 12 is to keep the two C-shaped plates 501 together in the initial state; the first function of the first locking member 11 and the second locking member 12 is that after the enlarging core 602 gradually extends into the spinal needle 5, the enlarging core 602 will abut against the first locking member 11 and the second locking member 12, thereby moving the first locking member 11 and the second locking member 12 away from each other, so as to realize the enlargement of the diameter of the spinal needle 5; The process of increasing the diameter of the 5th needle is as follows: The C-shaped plate 501 is divided into three sections from top to bottom: upper, middle, and lower. The first snap-fit ​​member 11 and the second snap-fit ​​member 12 are located in the middle section of the C-shaped plate 501. The middle section is the upper section between the middle section and the fixing component 601, and the remaining part is the lower section. The expanding core 602 gradually moves downward. When it enters the upper section, it begins to separate the two C-shaped plates 501, thereby gradually separating the first snap-fit ​​member 11 and the second snap-fit ​​member 12. When the expanding core 602 reaches the bottom of the upper section, the first snap-fit ​​member 11 and the second snap-fit ​​member 12 are completely separated, with a gap. The expanding core 602 continues to move downward and enters the middle section. The bottom end of the expanding core 602 will insert into the gap between the first snap-fit ​​member 11 and the second snap-fit ​​member 12. The outer wall of the expanding core 602 abuts against the first snap-fit ​​member 11 and the second snap-fit ​​member 12, and the gap gradually widens, thereby gradually increasing the distance between the two C-shaped plates 501.

[0039] Preferred, see Figure 2 , Figure 5 As shown, the outer wall of the C-shaped plate 501 is provided with a bone ingrowth layer 10, and multiple bone ingrowth holes are opened on the surface of the bone ingrowth layer 10.

[0040] Specifically, a bone ingrowth layer 10 is provided between the outer wall of the C-plate 501 and the inner wall of the medullary cavity to promote the extension of bone tissue into the bone ingrowth hole, thereby further enhancing the stability of the fixation between the prosthesis and the bone.

[0041] Preferred, see Figure 2 As shown, the connecting component 4 includes a first binding wire 401, and multiple grooves 402 are opened on the outer side of the hook plate 3. The hook plate 3 and the main prosthesis 1 are fixed by the first binding wire 401, and part of the first binding wire 401 is located inside the groove 402.

[0042] Specifically, multiple first binding wires 401 can be tied between the hook plate 3 and the main prosthesis 1 according to the fixation requirements, and the first binding wires 401 are tied inside the groove 402 of the hook plate 3 to prevent the first binding wires 401 from shifting. Therefore, the above design can further enhance the stability of the fixation between the prosthesis and the bone. The side of the main prosthesis 1 away from the hook plate 3 may also have a corresponding groove 402, so that the part of the first binding wire 401 bound to the main prosthesis 1 is also located inside the groove 402, thereby further limiting the binding of the first binding wire 401.

[0043] Preferred, see Figure 2 As shown, the connecting prosthesis 2 has a through hole 201. The hook plate 3 is fixed to the connecting prosthesis 2 by a second binding wire 8. Part of the second binding wire 8 is located inside the groove 402, and part of the second binding wire 8 is located inside the through hole 201.

[0044] Specifically, the second binding wire 8 not only further enhances the stability of the fixation between the prosthesis and the bone, but also allows for the selection of the groove 402 on the hook plate 3 to bind the second binding wire 8 according to the curve of the greater trochanter of different patients, thereby allowing the greater trochanter to bend slightly and achieve a better fit between the hook plate 3 and the greater trochanter.

[0045] Preferred, see Figure 1 As shown, the connecting assembly 4 also includes screws 7, and the hook plate 3 is fixedly connected to the large trochanter by screws 7.

[0046] Specifically, the threaded rod of screw 7 extends from the outer wall of hook plate 3 to the inner wall of hook plate 3, and then into the interior of the greater trochanter, thereby improving the stability of the fixation between hook plate 3 and the greater trochanter, thus enhancing the stability of the fixation between the prosthesis and the bone.

[0047] Furthermore, one end of the screw 7 is inserted into the hook plate 3, and the other end of the screw 7 extends into the interior of the connecting prosthesis 2.

[0048] Specifically, screw 7 penetrates the hook plate 3, the greater trochanter, the main prosthesis 1, and the connecting prosthesis 2, thereby further enhancing the stability of the fixation between the prosthesis and the bone.

[0049] Preferred, see Figure 2 As shown, the inner wall of the hook plate 3 is provided with a protruding cone 9.

[0050] Specifically, before fixing the hook plate 3 to the main prosthesis 1 through the connecting component 4, the hook plate 3 needs to be fitted to a preset position on the greater trochanter to prevent the hook plate 3 from deviating from the preset position during subsequent implantation. Therefore, a convex cone 9 is set on the hook plate 3, and the tip of the convex cone 9 is implanted into the greater trochanter to prevent the hook plate 3 from shifting.

[0051] The above description is merely a specific embodiment of this application, enabling those skilled in the art to understand or implement this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A hip joint prosthesis system, characterized in that It includes: The main prosthesis (1) is arranged at the bone resection; The connecting prosthesis (2) is arranged between the acetabulum and the main prosthesis (1); The hook plate (3) is detachably arranged on the main prosthesis (1) through the connecting assembly (4), and the inner wall of the hook plate (3) is used for abutting with the outer wall of the greater trochanter; The stem (5) is fixedly arranged at the bottom of the main prosthesis (1), and the stem (5) is used for inserting into the inside of the medullary cavity; The adjusting assembly (6) is used for adjusting the diameter of the stem (5).

2. The hip joint prosthesis system of claim 1, wherein: The adjusting assembly (6) includes a fixing assembly (601) and an expansion core (602), the main prosthesis (1) is provided with a moving channel along the path direction of the medullary cavity, the fixing assembly (601) is fixed to the bottom of the moving channel, the stem (5) includes two C-shaped plates (501), the top of the C-shaped plate (501) is fixedly connected with the bottom of the fixing assembly (601), the fixing assembly (601) is provided with a moving groove along the opening direction of the moving channel, and the expansion core (602) is movably arranged in the inside of the moving groove, and the diameter of the expansion core (602) gradually increases from one end to the other end.

3. The hip joint prosthesis system of claim 2, wherein: The inside of the stem (5) is provided with a clamping assembly, the clamping assembly includes a first clamping piece (11) and a second clamping piece (12), the first clamping piece (11) and the second clamping piece (12) are clamped and connected, the first clamping piece (11) is arranged on the inner wall of one C-shaped plate (501), and the second clamping piece (12) is arranged on the inner wall of the other C-shaped plate (501).

4. The hip joint prosthesis system of claim 3, wherein: The first clamping piece (11) and the second clamping piece (12) abut against the outer wall of the expansion core (602), so that the two C-shaped plates (501) are separated.

5. The hip joint prosthesis system of claim 2, wherein: The outer wall of the C-shaped plate (501) is provided with a bone ingrowth layer (10), and a plurality of bone ingrowth holes are formed in the surface of the bone ingrowth layer (10).

6. The hip prosthesis system of claim 1, wherein: The connecting assembly (4) includes a first binding wire (401), a plurality of grooves (402) are formed in the outer side of the hook plate (3), the hook plate (3) and the main prosthesis (1) are fixed through the first binding wire (401), and part of the first binding wire (401) is located in the groove (402).

7. The hip joint prosthesis system of claim 6, wherein: A through hole (201) is formed in the connecting prosthesis (2), the hook plate (3) and the connecting prosthesis (2) are fixed through a second binding wire (8), part of the second binding wire (8) is located in the groove (402), and part of the second binding wire (8) is located in the through hole (201).

8. The hip joint prosthesis system of claim 6, wherein: The connecting assembly (4) further includes a screw (7), and the hook plate (3) and the greater trochanter are fixedly connected through the screw (7).

9. The hip joint prosthesis system of claim 8, wherein: One end of the screw (7) penetrates the hook plate (3), and the other end of the screw (7) extends into the inside of the connecting prosthesis (2).

10. The hip prosthesis system of claim 1, wherein: The inner wall of the hook plate (3) is provided with a convex pointed cone (9).

Images