Artificial femoral stem prosthesis used for greater trochanter fracture and fitting method

Abstract

The invention discloses an artificial femoral stem prosthesis used for a greater trochanter fracture. The prosthesis comprises a prosthesis body; the top end of the prosthesis body is successively provided with a prosthesis shoulder and a prosthesis neck; the prosthesis further comprises a small pillar; the small pillar and the femoral stem prosthesis are made of a same material; one end of the small pillar is provided with a threaded structure and can be screwed into the prosthesis shoulder, and the other end of the small pillar is provided with a plurality of nylon binding bands. The invention further discloses a fitting method for the artificial femoral stem prosthesis used for the large trochanter fracture. By applying the femoral stem prosthesis, a large trochanter bone block can closely lean on the small pillar to obtain reliable support, and is fixed firmly by using the nylon binding bands preinstalled on the small pillar to recover gluteus medius strain, so that a patient can do activities on the ground earlier to reduce bed rest complications, and to improve joint replacement quality.

Description

technical field [0001] The invention belongs to the technical field of artificial femoral stems, in particular to an artificial femoral stem prosthesis for greater trochanteric fractures. [0002] The invention also relates to a method for installing the artificial femoral stem prosthesis for greater trochanteric fractures. Background technique [0003] The artificial femoral stem prosthesis currently used in clinical practice is not specially designed for greater trochanteric or intertrochanteric fractures. Fix the fracture, because the greater trochanter is the attachment site of the gluteus medius. If the greater trochanter is displaced significantly, the relaxation and tension of the gluteus medius will be reduced, and the patient will have serious consequences such as gluteus medius gait, pelvic tilt, and claudication. Therefore, for the above-mentioned patients who need hip replacement, the conventional artificial femoral stem prosthesis is still used, and the methods...

AI Technical Summary

Problems solved by technology

[0003] The artificial femoral stem prosthesis currently used in clinical practice is not specially designed for greater trochanteric or intertrochanteric fractures. Fix the fracture, because the greater trochanter is the attachment site of the gluteus medius. If the greater trochanter is displaced significantly, the relaxation and tension of the gluteus medius will be reduced, and the patient will have serious consequences such as gluteus medius gait, pelvic tilt, and claudication

Therefore, for the above-mentioned patients who need hip replacement, the conventional artificial femoral stem prosthesis is still used, and the methods of intraoperative fixation of the greater trochanter usually include sutures, steel wires, Kirschner wires, screws, and plates, etc., but the greater trochanter is one The bony protruding structure is relatively loose cancellous bone, there is no support around it, and the force is relatively large. The above fixation methods are all unilateral fixation, and the gluteus medius muscle is tense when the patient walks, which increases the stress on the fracture end. Therefore, the fixation effect is often inaccurate, and there may even be results such as postoperative wire breakage, steel pin displacement, redisplacement of fracture fragments, and poor fracture healing, which will affect the patient's walking function and postoperative curative effect.

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