Femoral prosthesis for retaining femoral head

Abstract

The invention provides a femoral prosthesis for retaining a femoral head, and belongs to the technical field of medical instruments. The femoral prosthesis comprises an extramedullary entity, whereinthe upper end surface of the extramedullary entity is in contact with the osteotomy surface of a proximal femur, an intramedullary entity is arranged at the upper end of the extramedullary entity, andthe intramedullary entity is inserted into a medullary cavity of the proximal femur and matched with the medullary cavity of the proximal femur in shape; a femoral outer side plate is arranged on theouter side of the extramedullary entity and fixed to the outer side of the proximal femur through lock pins; and a medullary needle is connected to the lower end of the extramedullary entity, and isfixed to the inner side of femoral shaft cortex. According to the scheme, for proximal femur bone defects, the femoral prosthesis can retain the femoral head and hip joint of a patient and restore thelength and function of the femur, so that various complications are reduced, besides, a long-term revision opportunity is increased for the patient, and a good bone foundation is provided for a revision surgery of the patient.

Description

technical field [0001] The invention relates to the technical field of medical instruments, in particular to a femoral prosthesis for retaining a femoral head. Background technique [0002] The femur is the most important bone in the human body, and the femoral head is even more important. People's upright walking, activities, and labor all rely on the support of the femoral head. In the face of proximal femoral bone defects caused by tumors, comminuted fractures, etc. (excluding femoral head and femoral neck, which are also facing damage), total hip replacement is mostly used at present, and the basic method of hip replacement surgery is Cut off the femoral head, femoral neck and necrotic diaphysis together, and then implant the artificial femoral stem, artificial acetabulum and femoral head. The patient also forfeit the opportunity to keep the proximal femur intact for future revision surgery. Contents of the invention [0003] The technical problem to be solved by the...

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Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a femoral prosthesis for retaining the femoral head to solve the problem that the existing total hip replacement gives up part of the femoral head and femoral neck in a healthy state, which will cause patients to be unable to undergo revision surgery in the future. Problems keeping the proximal femur intact

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