Protective structure for protecting human femoral head under pressure

Abstract

The invention provides a protective structure for protecting a femoral head under pressure. The protective structure comprises a protective cover, wherein the protective cover is of a quasi-hemispherical structure which is similar to the human femoral head in shape and size; the protective cover is used for sleeving the femoral head of a proximal femur, an outer spherical surface is matched with an inner surface or a cartilage surface of human acetabulum to reduce an injury to an articular surface of the acetabulum, and the edge extends; the inner side of an open end of the protective cover reaches the upper part of lesser trochanter through a femoral neck and is supported through the lesser trochanter; the outer side of the open end of the protective cover extends to a saddle part of greater trochanter and is similar to the shape of the greater trochanter of the proximal femur to bestride the saddle part of the greater trochanter to bear pressure; the front part and the rear part of the open end of the protective cover extend to an intertrochanteric line; and screws can be driven into an extended structure according to the requirements. The problems that existing support structures all have inherent structures and are not consistent with and matched with the shape of a necrotic area of the femoral head, so that the supported local area is insufficient, the strength is inconsistent and partial necrotic area cannot be effectively supported to affect the treatment effect are solved. The protective structure belongs to the technical field of femoral head repair.

Description

technical field [0001] The invention provides a femoral head protection structure, which belongs to the field of femoral head lesion protection and repair. Background technique [0002] In the early and middle stages of femoral head necrosis, including traumatic and non-traumatic, the main manifestations are crescent-shaped and semi-circular cystic changes due to local blood circulation disturbance and necrosis, which reduce the local strength and cannot bear the support of the human body. And gradually subchondral microfractures and local collapses appear, making the spherical femoral head uneven and not smooth, losing its matching with the acetabulum, and finally forming articular cartilage wear and tear. In this series of changes, the patient will appear Pain and dysfunction. The purpose of early and mid-term surgical treatment is mainly to keep the femoral head from collapse and deformation; common methods include: 1) decompression of the medullary heart; Fibula, iliac...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a protective structure for protecting the femoral head from pressure, and to mechanically protect it when the femoral head is diseased or damaged, so as to solve the lack of supporting force in the early and middle stages of the existing femoral head necrosis. The support method is unreasonable. The existing support structure has an inherent structure, which does not match or match the shape of the necrotic area of ​​the femoral head, resulting in insufficient local support area and inconsistent strength. Some necrotic areas cannot be effectively supported, and collapse occurs, which affects treatment. problem of effect

Images