Reconstruction device of humerus or thighbone near end

Abstract

The invention discloses a reconstruction device of a humerus or a thighbone near end. The reconstruction device comprises a prosthesis and a titanium cage, wherein the prosthesis comprises a combined prosthesis head and a prosthesis handle; the titanium cage is arranged outside the prosthesis handle, and the upper end of the titanium cage is connected with the prosthesis head. When the prosthesis is a humerus prosthesis, the prosthesis head comprises a humerus head and neck, and the humerus head and neck is formed by a humerus head and a humerus neck connected with the humerus head; the prosthesis handle comprises a humerus handle connected with the humerus neck; when the prosthesis is a prosthesis on the upper middle section of a thighbone, the prosthesis head comprises a thighbone head and neck, and the prosthesis handle comprises a thighbone handle. According to the reconstruction device, not only can the humerus or the thighbone near end be replaced and shoulder joints or hip joints be constructed, but also reconstruction for the defect after bone tumours of the humerus or the thighbone near end are removed can be achieved, and the reconstruction device is suitable for reconstruction of severely smashed C-shaped fracture conditions of humerus (thighbone) backbone near ends.

Description

technical field [0001] The invention relates to a device installed in the human body, in particular to a reconstruction device for the proximal end of the humerus or femur. Background technique [0002] The treatment of proximal humerus (femur) fractures and bone tumors currently mainly adopts three methods: proximal humerus (femur) nail-plate system, intramedullary nail system reduction and internal fixation, and artificial joint prosthesis replacement. For C-type fractures with severely comminuted proximal end of the humeral (femoral) shaft, it is difficult to achieve satisfactory reduction with internal fixation and the risk of humeral (femoral) head necrosis is extremely high; elderly patients with severe osteoporosis are difficult to internal fixation and are prone to loosening Leading to treatment failure; tumor lesions with severe bone destruction in the proximal humerus (femur) are accompanied by bone defects of varying degrees, and internal fixation is difficult. St...

AI Technical Summary

Problems solved by technology

For C-type fractures with severely comminuted proximal end of the humeral (femoral) shaft, it is difficult to achieve satisfactory reduction with internal fixation and the risk of humeral (femoral) head necrosis is extremely high; elderly patients with severe osteoporosis are difficult to internal fixation and are prone to loosening Leading to treatment failure; tumor lesions with severe bone destruction in the proximal humerus (femur) are accompanied by bone defects of varying degrees, and internal fixation is difficult. Standard joint prosthesis cannot solve the problem of bone defect in the backbone. Bulky, and there are problems such as limited bonding range between the prosthesis and the medullary cavity, and stress concentration

At the same time, the reconstruction effect of the attachment points of important tissues around the joint (joint capsule, tendon, etc.) is directly related to the postoperative function, and the existing prostheses generally lack solutions

[0003] Patients with complex proximal humerus (femur) trauma and bone tumors are difficult to operate, because the surgical failure rate remains high due to equipment problems, and some cases even have to choose amputation due to the lack of suitable treatment methods to reconstruct the limb structure

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