Sectional adjustable artificial hip joint prosthesis

Abstract

The invention discloses a sectional adjustable artificial hip joint prosthesis. The sectional adjustable artificial hip joint prosthesis comprises a handle-shaped body capable of being inserted into the femoral myelocavity, the lateral upper part of the handle-shaped body extends, an included angle between the axis of an extension end and the axis of the handle-shaped body is 110-140 degrees, the end part of the extension end is connected with a globoid matched with the acetabulum, the handle-shaped body is in an integrated structure or a meshed insertion structure, one end of the extension end is hinged with or fixedly connected with the globoid, and the other end of the extension end is hinged with the handle-shaped body. When the hip replacement operation is carried out clinically, the adjustment on the collodiaphyseal angle and the femoral neck anteversion is conveniently realized when different thighbone patients wear the hip joint prosthesis, while hip replacement is realized, dissection imbedding and fixation are realized, individual differences of the people are perfectly adapted, the hip replacement curative effect is improved, the accurate medical treatment is realized, and postoperative complications are further reduced.

Description

Technical field [0001] The present invention relates to joint prostheses. Background technique [0002] Femoral neck fractures can occur in all age groups, but it is most common in the elderly over 50 years old, and there are more women than men. Young and middle-aged femoral neck fractures are often caused by large external forces. Femoral neck fractures have high disability and mortality rates, and have become one of the main threats leading to the decline in the quality of life or death of the elderly. For patients with surgical indications, there are currently multiple hip replacements in clinical practice. This technology is becoming more mature and popular, and its 10-year excellent and good rate has exceeded 90%. After more than 70 years of development, artificial hip joint prostheses have been widely used in clinics. From the original Teflon material to the later high-strength metal-to-metal material, from the most primitive hip joint model to the later height, it confo...

AI Technical Summary

Problems solved by technology

[0003] Although several major improvements have been made, due to the special shape of the femoral neck, the two special angles, the neck-shaft angle (about 110°-140°) and the anteversion angle (normally 12°-15°), are mostly due to Individual differences vary, and the existing artificial hip joint prosthesis cannot perfectly adapt to the above-mentioned individual differences due to the one-piece fixed structure

Moreover, in the current clinical hip replacement surgery, the placement angle of the artificial hip joint prosthesis mainly depends on the operator's experience and feeling, and a slight difference may cause some unique defects of hip joint replacement surgery, such as prosthesis loosening As well as secondary fractures, osteonecrosis, etc., there are even some rare but objective problems, such as the fracture of the central stabilizing bracket placed in the prosthesis, lumbar muscle swelling, etc.

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