Femoral head prosthesis

Abstract

The invention discloses a femoral head prosthesis. The femoral head prosthesis is implanted and fixed on the femoral head in the body of a patient; a plurality of lugs (2) are arranged on the side surface of the femoral head prosthesis (1); the lugs (2) can be inserted into the femoral head to fix the femoral head prosthesis (1); bone trabeculas (4) are arranged on the two sides of the lugs (2) and in contact with the femoral head; the surfaces of the bone trabeculas are rough surfaces so that the femoral head prosthesis can be fixed in the femoral head. The femoral head prosthesis is used for overcoming the current situation that the whole hip joint needs to be replaced for the existing femoral head necrosis and no femoral stem and whole acetabulum are needed; for the femoral head necrosis due to pathological changes, the necrotic femoral head part is just cut off and replaced, and the good femoral head is retained; as a result, the problem of stability at later stage of a young patient due to large bone cut-off amount; the femoral head prosthesis is wider in application range for patients; the prosthesis can be implanted more conveniently, the wound area is small, and a good bone ingrowth property is achieved; besides, the curative effect at later stage is more remarkable.

Description

technical field [0001] The invention relates to a femoral head prosthesis, in particular to a femoral head prosthesis for necrosis of the femoral head. Background technique [0002] A femoral head prosthesis is a surgical implant used to replace the femoral head portion of the human hip joint. At present, the existing femoral head prosthesis needs to be used in combination with the femoral stem and the total acetabulum for hip hemiarthroplasty. [0003] Although the above-mentioned hip joint can replace the femoral head part of the hip joint, it is progressive, but in actual use, it is found that there are still some shortcomings in its structure, which lead to limitations of the femoral head prosthesis. The shortcomings include: [0004] 1) The patient population is small, and the existing hip joint prosthesis is a single structure and serialized product. The proportion of the femoral head shape is fixed and cannot be adjusted, but in fact the femoral head of the patient h...

AI Technical Summary

Problems solved by technology

[0004] 1) The patient population is small, and the existing hip joint prosthesis is a single structure and serialized product. The proportion of the femoral head shape is fixed and cannot be adjusted, but in fact the femoral head of the patient has the characteristics of diversity, so One type of hip joint prosthesis can only satisfy patients with one type of femoral head shape, and its application range will be greatly limited

[0005] 2) The trauma area is large, and the existing femoral head replacement needs to install the femoral stem, femoral head and the whole acetabulum, and the corresponding increase in osteotomy will destroy the existing good bone tissue;

[0006] 3) The femoral head according to the personalized setting needs to be accurately installed and fixed, and the osteotomy position needs to be matched during installation, otherwise excessive wear and wear particles will occur. For most cases of femoral head necrosis and collapse, the personalized femoral head cannot be used

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