Artificial hip joint femur-end artificial body

Abstract

The invention discloses an artificial hip joint femoral end prosthesis. It includes the header, the full collar of the femoral neck, the hollow half stem of the femoral medullary cavity, and the short inner stem of the femoral neck; the header is installed on the upper end of the full collar of the femoral neck in a tight fit; A plurality of full-collar fixation holes are formed; the hollow half-handle of the femoral medullary cavity is in the shape of a tube with equal section, its upper end is connected to the middle of the bottom surface of the femoral neck full-collar, and the angle between its main body and the bottom surface of the femoral neck full-collar is an acute angle; and The inner short handle of the femoral neck is arranged in the inner middle part of the bottom surface of the full collar of the femoral neck in a manner of being spaced apart from the hollow half handle of the femoral medullary cavity. The femoral end prosthesis of the artificial hip joint provided by the present invention can improve the stability of the prosthesis and reduce the influence on the cancellous bone arrangement, so that not only the service life of the prosthesis can be prolonged and the revision rate can be reduced, but also the connection between the prosthesis and the femur can be improved. It conforms to the original biomechanical characteristics of the femur, so it can reduce the bone loss of the proximal femur.

Description

technical field [0001] The invention belongs to the field of medical instruments, in particular to an artificial hip joint femoral end prosthesis for hip joint replacement. Background technique [0002] At present, the femoral end prosthesis of the artificial hip joint clinically used is mainly divided into two types, one is a stem prosthesis, and the other is a sessile prosthesis. [0003] Stemmed prostheses are divided into collared prostheses and collarless prostheses. Among them, the collar of the collared prosthesis is limited to the medial femoral calcar. The advantage is that the prosthetic collar can maintain the original biomechanical characteristics of the medial femur and reduce bone loss. There is a certain influence on the force of the stem, which is likely to cause loosening of the prosthesis; the collarless prosthesis uses the extrusion force of the stem to increase the friction between the stem and the medial femoral cortex, so as to achieve the purpose of s...

AI Technical Summary

Problems solved by technology

[0004] Although the design of the sessile prosthesis conforms to the biomechanical characteristics of the femur, the effectiveness of clinical application is not sure, because the reliability and long-term stability of the prosthesis have not been confirmed.

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