CN216060884U - Acetabular posterior wall defect reconstruction system - Google Patents
Acetabular posterior wall defect reconstruction system Download PDFInfo
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- CN216060884U CN216060884U CN202121487072.5U CN202121487072U CN216060884U CN 216060884 U CN216060884 U CN 216060884U CN 202121487072 U CN202121487072 U CN 202121487072U CN 216060884 U CN216060884 U CN 216060884U
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Abstract
The utility model discloses an acetabulum posterior wall defect reconstruction system. The shape and the thickness of the reconstructed prosthesis are consistent with the outer edge of the acetabulum at the defect position, and the articular surface end of the reconstructed prosthesis is of an arc structure; a plurality of screw holes are arranged on the reconstruction prosthesis, and the opening directions of the screw holes are different and all face to the outside of the joint; screws are passed through the screw holes to fix reconstruction prostheses at the acetabular posterior wall defect, including, but not limited to, acetabular full posterior wall defect reconstruction prostheses, acetabular posterior wall superior 2/3 reconstruction prostheses, acetabular posterior wall inferior 2/3 reconstruction prostheses, acetabular posterior wall superior 1/3 reconstruction prostheses, acetabular posterior wall medial 1/3 reconstruction prostheses, and acetabular posterior wall inferior 1/3 reconstruction prostheses. The utility model has the advantages of meeting the requirements of reconstruction of various acetabulum posterior wall defects, solving the problem that patients with serious acetabulum posterior wall fracture fail to fix after in-row fixation treatment or are not suitable for in-row fixation treatment, and improving the prognosis effect and the life quality of the patients.
Description
Technical Field
The utility model relates to the technical field of medical instruments, in particular to an acetabulum posterior wall defect reconstruction system.
Background
The posterior wall fracture of the acetabulum is the most common type of acetabulum fracture, and according to the principle that in addition to the simple posterior wall fracture in the lotournel type in 1964, other types of fractures are combined with the posterior wall fracture, such as posterior column combined posterior wall fracture and transverse row combined posterior wall fracture, and the incidence rate of the fractures accounts for 35% -47% of the total acetabulum fracture. The degree of acetabular posterior wall fracture damage is primarily related to the degree and angle of femoral head impingement, with different impingement classifying the posterior wall fracture types into 3 categories: simple posterior fractures, comminuted posterior fractures, and posterior fractures with compression of the articular surfaces. Regardless of the type of posterior fracture, surgical treatment is often used, because most non-surgically treated patients do not have the expected prognosis and the posterior bone mass accumulates to more than 25%, which severely degrades the stability of the hip joint and must be treated surgically.
At present, clinical orthopedic wounds are mostly fixed by means of rebuilding steel plates, but different fixing methods are adopted for different fracture types. The simple rear wall fracture can play a strong and stable fixing effect on the rear wall only by using single or double steel plates or lag screws; for the crushed rear wall fracture, a spring steel plate or a small screw is additionally added on the basis of the reconstruction steel plate to fix a small bone block; for posterior fractures with compression of the articular surfaces, autologous or allogeneic bone is also used to reconstruct the site of compression. The prognosis of simple posterior wall fracture can basically achieve expected treatment effect, and the latter two types of posterior wall fracture often cause unevenness of joint surfaces after treatment and absorption of bone blocks after a period of operation because of various bone blocks or joint surface compression, so that the wearing of femoral heads can cause arthritis to cause pain and movement disorder, and finally the joint replacement is rapidly ended. The effect of the surgery is quite different from the clinical expected effect.
The most clinically effective treatment for severe posterior acetabular wall defects is hip replacement, but this procedure often requires revision in younger patients, and therefore care must be taken to consider if it is worth changing the hip in younger patients with posterior defects. The Chinese patent application with the application number of 201610539646.6 discloses an acetabular defect reconstruction prosthesis, which comprises an iliac support, wherein the iliac support comprises a bracket and a connecting wing plate arranged on the bracket, and the bracket is in contact fit with the iliac; the acetabular cup is rotationally connected with the bracket, and the technical scheme of the utility model can effectively solve the problems of reconstruction and long-term stability of the defects around the acetabular cup in the prior art. However, the utility model is mainly used for reconstructing huge pelvis bone defects generated after surgical resection of the tumor around the acetabulum, but the reconstructed prosthesis has too large volume and is only suitable for reconstructing huge defects participated after the resection of the tumor, and has no effect on reconstructing the small range of the defect of the back wall. The Chinese patent application with the application number of 201510266407.3 discloses an acetabulum reconstruction prosthesis system suitable for different types of acetabulum defects, which comprises an acetabulum reconstruction cushion block, an acetabulum reconstruction titanium net and an acetabulum reconstruction bracket, wherein screw holes are uniformly distributed on the surface of the acetabulum reconstruction prosthesis system, and the acetabulum reconstruction prosthesis system can be fixed on a position with better acetabulum sclerotin through acetabulum screws, so that the filling and supporting effects of the defect position are realized, and the effect of immediately stabilizing after operation is achieved; the acetabulum reconstruction cushion block, the acetabulum reconstruction titanium net and the acetabulum reconstruction bracket can meet the requirements of acetabulums with different sizes. However, this patent is directed to the use of a total acetabular defect (i.e., a total acetabular replacement technique that requires the total acetabulum to be destroyed and then reconstructed), and the use of this technique is not suitable for localized posterior wall defects. The Chinese patent application with the application number of 202011184480.3 discloses a construction method of an individualized 3D printed acetabular wall defect repair and reconstruction system, the Chinese patent application with the application number of 201921884497.2 discloses an embedded type acetabular posterior wall reconstruction prosthesis based on 3D printing, both are methods and devices aiming at the replacement of the whole acetabulum, and partial acetabular defects cannot be reconstructed only by reconstructing defects, and the reconstruction of the whole acetabulum after being destroyed is often needed.
In the prior art, the best treatment strategy for the defect of the posterior wall of the acetabulum is hip replacement, but when the defect of the posterior wall of a young patient or the simple posterior wall defect of an old person has no complications such as joint wear, the hip replacement is not the best choice.
In view of the above, there is a need to design a prosthetic technique for reconstructing a defect of posterior acetabular wall that can solve the above problems.
Disclosure of Invention
The utility model aims to provide an acetabulum posterior wall defect reconstruction system, which meets the requirements of reconstruction of various acetabulum posterior wall defects, solves the problems of fixation failure after in-row fixation treatment or unsuitability for in-row fixation treatment of patients with severe acetabulum posterior wall fracture (the utility model is used for reconstructing the acetabulum posterior wall fracture block part in the first operation, prevents severe arthritis caused by subsequent internal fixation failure and hip replacement, and reconstructs the posterior wall fracture defect of patients with posterior wall fracture with internal fixation failure before the femoral head is worn), and improves the prognosis effect and the life quality of the patients.
The acetabulum posterior wall defect reconstruction system is a universal patch prosthesis, can also customize a patch prosthesis through 3D printing according to a specific defect part, is matched and connected with the specific defect part, and meets the reconstruction requirements of various acetabulum posterior wall defects; the universal type model of the patch prosthesis comprises six types (acetabulum full posterior wall defect reconstruction prosthesis, acetabulum posterior wall upper 2/3 reconstruction prosthesis, acetabulum posterior wall lower 2/3 reconstruction prosthesis, acetabulum posterior wall upper 1/3 reconstruction prosthesis, acetabulum posterior wall middle 1/3 reconstruction prosthesis and acetabulum posterior wall lower 1/3 reconstruction prosthesis) but not limited thereto, the universal type patch prosthesis can also be constructed according to other proportions of posterior walls, the specific construction structure depends on actual application conditions, and the universal type patch prosthesis is suitable for reconstruction of posterior wall defects of various sizes to replace original acetabulum replacement. The present invention is described in detail mainly with the six types of patch prostheses described above, but is not limited to the above 6 types.
In order to achieve the purpose, the technical scheme of the utility model is as follows: the acetabulum posterior wall defect reconstruction system comprises 3D-printed reconstruction prostheses and screws of acetabulum posterior wall defects of various types, wherein the shape of the reconstruction prostheses is consistent with the outer edge of an acetabulum at the defect part, the thickness of the reconstruction prostheses is consistent with the outer edge of the acetabulum at the defect part, various types of patches are similar to the outer edge of the acetabulum at the defect part, and the thickness of the patches is similar to the outer edge of the acetabulum at the acetabulum, so that the patches meet the defect of the acetabulum posterior wall part and realize the effect of filling the bone defects;
the articular surface end of the reconstructed prosthesis is of an arc-shaped structure and is perfectly fit with the surrounding normal articular surfaces, so that gaps are avoided;
the main body of the reconstruction prosthesis is provided with a plurality of screw holes, the utility model fixes the patch on the ilium by inserting screws, and realizes the supporting function of the patch, and the stabilizing effect of the hip joint can be achieved after operation;
the openings of the screw holes are different in direction and face the outside of the joint, so that the mechanical distribution of the screws on the main body is even, and the partial tilting of the patch prosthesis due to uneven stress is avoided; the opening directions of the screw holes are all away from the acetabulum joint surface and all face the outside of the joint, and the directions of the screws are all away from the hip joint, so that the screws are prevented from entering the joint; the main body surfaces of various types of acetabulum patch prostheses are all distributed with screw holes in different directions, and all types of acetabulum patch prostheses can be fixed at corresponding acetabulum posterior wall defect positions through acetabulum screws, so that the defect positions are filled and supported, and the effect of immediately stabilizing after operation is achieved;
the screw is penetrated through the screw hole to fix the reconstruction prosthesis at the acetabulum posterior wall defect,
the reconstruction prosthesis comprises, but is not limited to, an acetabulum full posterior wall defect reconstruction prosthesis, an acetabulum posterior wall upper 2/3 reconstruction prosthesis, an acetabulum posterior wall lower 2/3 reconstruction prosthesis, an acetabulum posterior wall upper 1/3 reconstruction prosthesis, an acetabulum posterior wall middle 1/3 reconstruction prosthesis and an acetabulum posterior wall lower 1/3 reconstruction prosthesis, and different types of patch prostheses meet the requirements of acetabulum posterior wall defect reconstruction in different degrees.
Furthermore, the bottom of the screw hole on the reconstructed prosthesis is of a bowl-shaped structure, so that a screw cap can be better adapted, and the fixing effect of the screw is enhanced.
Furthermore, the main body of the reconstruction prosthesis is in a hollow net structure, and the main bodies of all types of the acetabulum posterior wall defect reconstruction prostheses in the utility model adopt the hollow net structure and can be used for filling grinded autogenous bones or artificial bones, so that the growth of normal sclerotin in the future is facilitated, the prostheses and the surrounding normal sclerotin are integrated into a whole, and the fixation effect is further enhanced.
Further, the main body of the reconstruction prosthesis sinks 3mm below the acetabulum at the defect (the thickness of the main body of the reconstruction prosthesis is similar to that of the defect, and the side of the main body of the reconstruction prosthesis far away from the acetabulum sinks 3mm below the acetabulum at the defect); the main bodies of all types of acetabular posterior wall defect reconstruction prostheses sink about 3mm compared with surrounding normal sclerotin, and the sinking space can be used for pressing bone grafting or bone cement filling, so that the fixation effect is further enhanced, the stability of the reinforcing block is enhanced, and the effect of immediate stability after operation is achieved.
The joint surface end of the reconstruction prosthesis is a smooth metal surface, the acetabulum joint surface parts of all types of acetabulum posterior wall defect reconstruction prostheses are smooth metal surfaces, ceramic or polyethylene can be lined, the acetabulum surface and the normal joint surface are smooth, and the irreparable effect caused by the friction of the activity of the hip joint on the femoral head in the postoperative life is prevented.
Furthermore, 4 screw holes are respectively arranged on the main bodies of the acetabulum full posterior wall defect reconstruction prosthesis, the acetabulum posterior wall upper 2/3 reconstruction prosthesis and the acetabulum posterior wall lower 2/3 reconstruction prosthesis to form mechanical fixing action in all directions;
2 screw holes are respectively arranged on the main bodies of the 1/3 reconstructed prosthesis on the back wall of the acetabulum, the 1/3 reconstructed prosthesis in the back wall of the acetabulum and the 1/3 reconstructed prosthesis under the back wall of the acetabulum, so that the mechanical fixing effect in all directions is formed;
according to the utility model, different types of patch prosthesis main bodies are provided with different numbers of screw holes, and the directions of screw placement in the screw holes are different, so that the mechanical distribution of screws on the main body is even, and partial tilting of the patch prosthesis due to uneven stress is avoided.
Furthermore, the shape and the thickness of the acetabulum full posterior wall defect reconstruction prosthesis are consistent with the outer edge of the acetabulum at the full posterior wall defect, and a plurality of screws pass through the screw holes to fix the acetabulum full posterior wall defect reconstruction prosthesis at the acetabulum posterior wall defect;
the shape and thickness of the 2/3 reconstructed prosthesis on the back wall of the acetabulum are consistent with the outer edge of the acetabulum at the defect position 2/3 on the back wall of the acetabulum, and a plurality of screws pass through the screw holes to fix the 2/3 reconstructed prosthesis on the back wall of the acetabulum at the defect position 2/3 on the back wall of the acetabulum;
the shape and thickness of the acetabulum posterior wall lower 2/3 reconstruction prosthesis are consistent with the outer edge of the acetabulum at the position of the posterior wall lower 2/3 defect, and a plurality of screws penetrate through the screw holes to fix the acetabulum posterior wall lower 2/3 reconstruction prosthesis at the position of the acetabulum posterior wall lower 2/3 defect.
Furthermore, the shape and thickness of the 1/3 reconstructed prosthesis on the posterior wall of the acetabulum are consistent with the outer edge of the acetabulum at the defect position 1/3 on the posterior wall of the acetabulum, and a plurality of screws penetrate through the screw holes to fix the 1/3 reconstructed prosthesis on the posterior wall of the acetabulum at the defect position 1/3 on the posterior wall of the acetabulum;
the shape and thickness of the 1/3 reconstruction prosthesis in the posterior wall of the acetabulum are consistent with the outer edge of the acetabulum at the defect position 1/3 in the posterior wall of the acetabulum, and a plurality of screws penetrate through the screw holes to fix the 1/3 reconstruction prosthesis in the posterior wall of the acetabulum at the defect position 1/3 in the posterior wall of the acetabulum;
the shape and thickness of the acetabulum posterior wall lower 1/3 reconstruction prosthesis are consistent with the outer edge of the acetabulum at the position of the 1/3 defect of the posterior wall, and a plurality of screws penetrate through the screw holes to fix the acetabulum posterior wall lower 1/3 reconstruction prosthesis at the position of the 1/3 defect in the acetabulum posterior wall.
The utility model has the following advantages:
(1) the acetabulum posterior wall defect reconstruction prosthesis provided by the utility model is divided into various models, and a proper patch prosthesis can be selected at will or customized by 3D printing according to the specific size of the acetabulum posterior wall defect;
(2) the reconstruction prosthesis is a universal patch prosthesis, and can be designed according to the corresponding actual anatomic structure of the position of the posterior wall of the acetabulum, so that the reconstruction prosthesis is more attached to the peripheral bone surface, and the joint surface end of the reconstruction prosthesis is attached to the normal joint surface around the posterior wall of the acetabulum;
(3) the main body of the prosthesis of the utility model adopts a spatial hollow reticular structure, and sinks 3mm with the normal bone surface around the acetabulum posterior wall, thereby facilitating the bone implantation by pressing or filling bone cement in the operation and ensuring the long-term stability of the prosthesis and the surrounding bone after the operation.
Drawings
Fig. 1 is a front view structural diagram of a total acetabulum posterior wall defect reconstruction prosthesis in the utility model.
Fig. 2 is a schematic side view of the total acetabulum posterior wall defect reconstruction prosthesis of the utility model.
Fig. 3 is a front view of the 2/3 defect reconstruction prosthesis on the posterior wall of the acetabulum of the utility model.
Fig. 4 is a side view of the 2/3 defect reconstruction prosthesis on the posterior wall of the acetabulum of the utility model.
Fig. 5 is a front view structural diagram of the acetabulum posterior wall lower 2/3 defect reconstruction prosthesis in the utility model.
Fig. 6 is a schematic side view of the prosthesis for reconstructing a defect of 2/3 under the posterior wall of acetabulum in accordance with the utility model.
Fig. 7 is a front view of the 1/3 defect reconstruction prosthesis on the posterior wall of the acetabulum of the utility model.
Fig. 8 is a schematic side view of the 1/3 defect reconstruction prosthesis on the posterior wall of the acetabulum of the utility model.
Fig. 9 is a front view of the 1/3 defect reconstruction prosthesis in the posterior wall of the acetabulum of the utility model.
Fig. 10 is a side view of the 1/3 defect reconstruction prosthesis of the present invention in the posterior wall of the acetabulum.
Fig. 11 is a front view of the prosthesis for reconstructing the defect of 1/3 under the posterior wall of acetabulum in the utility model.
Fig. 12 is a side view of the prosthesis for reconstructing a defect of 1/3 under the posterior wall of acetabulum in accordance with the utility model.
In FIG. 2 the body of the patch prosthesis is 3mm more depressed than the surrounding normal bone.
In fig. 4, the main body of the reconstruction prosthesis is 3mm more sunken than the surrounding normal bone.
In fig. 6, the main body of the reconstruction prosthesis is 3mm more sunken than the surrounding normal bone.
In fig. 8, the main body of the reconstruction prosthesis is 3mm more sunken than the surrounding normal bone.
In fig. 10, the main body of the reconstruction prosthesis is 3mm more sunken than the surrounding normal bone.
In fig. 12, the main body of the reconstruction prosthesis is 3mm more sunken than the surrounding normal bone.
In fig. 1 to 12, a denotes the acetabular posterior wall.
In the figure, 1-reconstruction prosthesis, 1.1-acetabulum full posterior wall defect reconstruction prosthesis, 1.2-acetabulum posterior wall upper 2/3 reconstruction prosthesis, 1.3-acetabulum posterior wall lower 2/3 reconstruction prosthesis, 1.4-acetabulum posterior wall upper 1/3 reconstruction prosthesis, 1.5-acetabulum posterior wall middle 1/3 reconstruction prosthesis, 1.6-acetabulum posterior wall lower 1/3 reconstruction prosthesis, 2-screw hole and 3-screw.
Detailed Description
The embodiments of the present invention will be described in detail with reference to the accompanying drawings, which are not intended to limit the present invention, but are merely exemplary. While the advantages of the utility model will be clear and readily understood by the description.
As shown in fig. 1 to 12, the acetabular posterior wall defect reconstruction system of the present invention, including but not limited to acetabular full posterior wall defect reconstruction prosthesis 1.1, acetabular posterior wall superior 2/3 reconstruction prosthesis 1.2, acetabular posterior wall inferior 2/3 reconstruction prosthesis 1.3, acetabular posterior wall superior 1/3 reconstruction prosthesis 1.4, acetabular posterior wall medial 1/3 reconstruction prosthesis 1.5, and acetabular posterior wall inferior 1/3 reconstruction prosthesis 1.6, can meet various acetabular posterior wall defect reconstruction requirements.
Referring to fig. 1 to 12, the main body of the various reconstructive prostheses of the present invention all adopt a hollowed-out mesh structure, which can be used for bone implantation during operation, thereby facilitating the growth of normal bone into the prostheses, tightly combining with the prostheses, and improving the service life of the prostheses.
Referring to fig. 1 to 12, the main body of each kind of reconstructive prosthesis of the present invention has a screw hole, the bottom of the screw hole is a bowl-shaped structure, which facilitates the combination of the nut and the screw hole (i.e. the acetabular screw), enhances the fixation of the screw, and the direction of the screw of each screw hole avoids the acetabular articular surface, thereby preventing the screw from entering the joint.
Referring to fig. 1 to 12, the articular surface ends of various reconstructive prostheses of the present invention are all arc-shaped structures, and perfectly fit with the surrounding normal articular surfaces, so as to avoid generating gaps.
As shown in fig. 2, 4, 6, 8, 10 and 12, each kind of the acetabular reconstruction prosthesis body of the utility model sinks 3mm below the surrounding normal bone, so as to press the bone graft or fill the bone cement, thereby further stabilizing and enhancing the fixation effect of the reconstruction prosthesis.
The reconstruction prosthesis 1 (including but not limited to an acetabulum posterior wall full-defect reconstruction prosthesis, an acetabulum posterior wall upper 2/3 defect reconstruction prosthesis, an acetabulum posterior wall lower 2/3 defect reconstruction prosthesis, an acetabulum posterior wall upper 1/3 defect reconstruction prosthesis, an acetabulum posterior wall middle 1/3 defect reconstruction prosthesis and an acetabulum posterior wall lower 1/3 defect reconstruction prosthesis) is designed according to the defect degree of the acetabulum posterior wall, different types of reconstruction prostheses are designed and selected according to the defects of different degrees, and the requirements of different acetabulum posterior wall defects are met, specifically as follows:
(1) the acetabulum posterior wall full-defect reconstruction prosthesis shown in figure 1 is suitable for complete defect of the acetabulum posterior wall, completely replaces the whole acetabulum posterior wall, and supplements the defect of the posterior wall, 4 screw holes are distributed on the surface of the prosthesis, and the directions of screw placement in the screw holes are different, so that the screws are evenly distributed on the main body mechanically, and partial tilting of the reconstruction prosthesis due to uneven stress is avoided;
(2) the reconstruction prosthesis for defects 2/3 and 2/3 on the posterior wall of the acetabulum shown in fig. 3 and 5 is correspondingly applied to defects 2/3 and 2/3 on the posterior wall of the acetabulum respectively, 4 screw holes are distributed on the surface of the reconstruction prosthesis, and the directions of screw placement in the screw holes are different, so that the mechanical distribution of the screws on the main body is even, and the reconstruction prosthesis is prevented from being partially tilted due to uneven stress;
(3) as shown in fig. 7, 9 and 11, the acetabular posterior wall superior 1/3, middle 1/3 and lower 1/3 posterior wall defect reconstruction prostheses are respectively and correspondingly applied to acetabular posterior wall superior 1/3, middle 1/3 and lower 1/3 posterior wall defects, 2 screw holes are distributed on the surfaces of the acetabular posterior wall superior 1/3, middle 1/3 and lower 1/3 posterior wall defects, and the directions of screw placement in the screw holes are different, so that the mechanical distribution of screws on a main body is even, and partial tilting of the reconstruction prostheses due to uneven stress is avoided;
the reconstruction prostheses 1 of various types are flexibly used for the acetabular posterior wall defects of different degrees, the filling and supporting effects of the corresponding defects are realized, the effect of immediate postoperative stability is achieved, and the requirements of different procedural defects of the acetabular posterior wall are met.
It is further noted that the articulating surfaces of the various reconstructive prostheses of the utility model have smooth metal surfaces to reduce friction with the femoral head, and may be modified to have ceramic or polyethylene linings as desired.
In order to more clearly illustrate the advantages of the acetabular posterior wall defect reconstruction system of the present invention compared to the prior art, the two technical solutions were compared by the staff, and the comparison results are as follows:
as can be seen from the above table, compared with the prior art, the acetabular posterior wall defect reconstruction system of the present invention can solve the problem of fixation failure after in-row fixation treatment of patients with severe acetabular posterior wall fracture, has good stability, can realize immediate stability, has a small volume, can print reconstruction prostheses of other types and sizes by using a 3D printing technique in addition to several specific types of sizes (such as an acetabular full posterior wall defect reconstruction prosthesis, an acetabular posterior wall upper 2/3 reconstruction prosthesis, an acetabular posterior wall lower 2/3 reconstruction prosthesis, an acetabular posterior wall upper 1/3 reconstruction prosthesis, an acetabular posterior wall middle 1/3 reconstruction prosthesis and an acetabular posterior wall lower 1/3 reconstruction prosthesis) which are prepared in advance, and meets the requirements of various acetabular posterior wall defect reconstructions, and the reconstruction method is simple, rapid and effective.
The above description is only for the purpose of illustrating the preferred embodiments and is not intended to limit the present invention, and all the persons skilled in the art can make further modifications, modifications and equivalents without departing from the technical principle of the present invention, and all such modifications, modifications and equivalents shall fall within the protection scope of the present invention.
Other parts not described belong to the prior art.
Claims (7)
1. The acetabulum posterior wall defect reconstruction system is characterized in that: comprises a reconstruction prosthesis (1) and screws (3), the shape of the reconstruction prosthesis (1) is consistent with the outer edge of the acetabulum at the defect position, and the thickness of the reconstruction prosthesis is consistent with the outer edge of the acetabulum at the defect position,
the articular surface end of the reconstruction prosthesis (1) is of an arc structure;
a plurality of screw holes (2) are arranged on the reconstruction prosthesis (1), and the opening directions of the screw holes (2) are different and all face the outside of the joint;
the screw (3) passes through the screw hole (2) to fix the reconstruction prosthesis (1) at the acetabulum posterior wall defect,
the reconstruction prosthesis (1) comprises, but is not limited to, an acetabulum full posterior wall defect reconstruction prosthesis (1.1), an acetabulum posterior wall upper 2/3 reconstruction prosthesis (1.2), an acetabulum posterior wall lower 2/3 reconstruction prosthesis (1.3), an acetabulum posterior wall upper 1/3 reconstruction prosthesis (1.4), an acetabulum posterior wall middle 1/3 reconstruction prosthesis (1.5) and an acetabulum posterior wall lower 1/3 reconstruction prosthesis (1.6).
2. The acetabular posterior wall defect reconstruction system of claim 1, wherein: the bottom of the screw hole (2) is of a bowl-shaped structure.
3. The acetabular posterior wall defect reconstruction system of claim 1 or 2, wherein: the main body of the reconstruction prosthesis (1) is in a hollow net structure.
4. The acetabular posterior wall defect reconstruction system of claim 3, wherein: the main body of the reconstruction prosthesis (1) sinks 3mm below the acetabulum of the defect.
5. The acetabular posterior wall defect reconstruction system of claim 4, wherein: 4 screw holes (2) are respectively arranged on the main bodies of the acetabulum full posterior wall defect reconstruction prosthesis (1.1), the acetabulum posterior wall upper 2/3 reconstruction prosthesis (1.2) and the acetabulum posterior wall lower 2/3 reconstruction prosthesis (1.3);
2 screw holes (2) are respectively arranged on the main bodies of the 1/3 reconstruction prosthesis (1.4) on the posterior wall of the acetabulum, the 1/3 reconstruction prosthesis (1.5) in the posterior wall of the acetabulum and the 1/3 reconstruction prosthesis (1.6) under the posterior wall of the acetabulum.
6. The acetabular posterior wall defect reconstruction system of claim 5, wherein: the shape and the thickness of the acetabulum full posterior wall defect reconstruction prosthesis (1.1) are consistent with the outer edge of the acetabulum at the full posterior wall defect, and a plurality of screws (3) pass through the screw holes (2) to fix the acetabulum full posterior wall defect reconstruction prosthesis (1.1) at the acetabulum posterior wall defect;
the shape and the thickness of the 2/3 reconstruction prosthesis (1.2) on the back wall of the acetabulum are consistent with the outer edge of the acetabulum at the defect position 2/3 on the back wall, and a plurality of screws (3) pass through the screw holes 2 to fix the 2/3 reconstruction prosthesis (1.2) on the back wall of the acetabulum at the defect position 2/3 on the back wall of the acetabulum;
the shape and the thickness of the acetabulum posterior wall lower 2/3 reconstruction prosthesis (1.3) are consistent with the outer edge of the acetabulum at the defect position of the posterior wall lower 2/3, and a plurality of screws (3) pass through the screw holes (2) to fix the acetabulum posterior wall lower 2/3 reconstruction prosthesis (1.3) at the defect position of the acetabulum posterior wall lower 2/3.
7. The acetabular posterior wall defect reconstruction system of claim 5, wherein: the shape and the thickness of the 1/3 reconstruction prosthesis (1.4) on the back wall of the acetabulum are consistent with the outer edge of the acetabulum at the defect position 1/3 on the back wall, and a plurality of screws (3) pass through the screw holes (2) to fix the 1/3 reconstruction prosthesis (1.4) on the back wall of the acetabulum at the defect position 1/3 on the back wall of the acetabulum;
the shape and thickness of the 1/3 reconstruction prosthesis (1.5) in the posterior wall of the acetabulum are consistent with the outer edge of the acetabulum at the defect position 1/3 in the posterior wall of the acetabulum, and a plurality of screws (3) pass through the screw holes (2) to fix the 1/3 reconstruction prosthesis (1.5) in the posterior wall of the acetabulum at the defect position 1/3 in the posterior wall of the acetabulum;
the shape and thickness of the acetabulum posterior wall lower 1/3 reconstruction prosthesis (1.6) are consistent with the outer edge of the acetabulum at the defect position 1/3 of the posterior wall, and a plurality of screws (3) pass through the screw holes (2) to fix the acetabulum posterior wall lower 1/3 reconstruction prosthesis (1.6) at the defect position 1/3 in the acetabulum posterior wall.
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