Acetabulum prosthesis

Abstract

The invention provides an acetabulum prosthesis. An acetabular cup and a filling structure are arranged in the acetabulum prosthesis, and an articular surface is arranged in a groove of the acetabularcup; and the filling structure is arranged on the acetabular cup, the filling structure is located on the side, away from the articular surface, of the acetabular cup, at least one part of the filling structure is used for filling a defective acetabular fossa to support the acetabular cup, and at least one part of the filling structure is made of absorbable alloy. Due to the fact that the fillingstructure is connected with the acetabular cup, after implantation, the filling structure supports the acetabular cup, dislocation and slippage between the filling structure and the acetabular cup are avoided, and stability is high; and moreover, at least one part of the filling structure is made of the absorbable alloy so that the absorbable alloy can be gradually absorbed by a human body afterlong-term implantation and can be replaced by newly grown bones, thereby realizing bone reconstruction. Therefore, through the technical scheme, the effects of early-stage high-strength filling and supporting and middle-and-long-term bone reconstruction can be achieved.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to an acetabular prosthesis. Background technique [0002] With the widespread development of artificial joint replacement, more and more patients need surgery, and artificial joint revision has become a routine operation. For the extensive bone defect of the acetabulum after hip replacement and the bone loss around the knee joint, there are many clinical reconstruction methods, one of which is bone grafting, the main purpose is to restore sufficient bone mass and mechanics as much as possible initial stability characteristics. [0003] Bone defects are very common in arthroplasty revision. For small defects, granular bone grafting, structural bone grafting, or enlarged diameter of the revision prosthesis can be used to reconstruct small defects, and good results can be obtained. When the defect is serious, revision is often very difficult. The difficulty lies in the lack ...

AI Technical Summary

Problems solved by technology

[0005] The present invention provides an acetabular prosthesis to solve the problem that the acetabular prosthesis in the prior art has poor function recovery effect on the hip joint for patients with severe bone defects

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