Bone defect repair system for wrist joint

Abstract

The invention discloses a bone defect repair system for a wrist joint. The bone defect repair system comprises a distal radius prosthesis and a radius articular surface prosthesis; the first end of the body of the distal radius prosthesis is provided with a plate-shaped radius setting part extending in the long axis direction of the body of the distal radius prosthesis; the radius setting part is provided with a plurality of radius connecting holes, and the end part of the second end of the body of the distal radius prosthesis is provided with a first limiting groove; the first end of the radius articular surface prosthesis is provided with a protruding first limiting block, and the first limiting block is installed in the first limiting groove; and the second end face of the radius articular surface prosthesis is a radius articular surface. The radius articular surface and a metacarpal bone jointly form a wrist joint part corresponding to the radius, the geometrical shape of the wrist joint part is the same as the geometrical shape of the articular surface of an anatomical wrist joint, and therefore the function and the range of motion of the wrist joint can be recovered.

Description

technical field [0001] The present application relates to the technical field of medical devices, and more specifically, relates to a wrist bone defect repair system. Background technique [0002] The wrist joint, also known as the radiocarpal joint, is a typical elliptical joint. The wrist joint is composed of the proximal articular surfaces of the scaphoid, lunate, and triquetrum of the hand as the articular head, and the carpal articular surface of the radius and the articular disc below the ulnar head as the joint socket. The radius and ulna are the two bones of the forearm, and the radius is located on the outside of the forearm, on the side of the thumb. The ulna is located on the inside of the forearm, on the side of the little finger. [0003] Bone defects in the wrist joints caused by infection, trauma, arthritis, rheumatism, or tumors seriously affect the patient's ability to work and quality of life. At present, the wrist prosthesis on the market is a conventio...

AI Technical Summary

Problems solved by technology

At present, the wrist prosthesis on the market is a conventional prosthesis, which is generally a ball-and-socket structure. This kind of prosthesis only relies on the ball-and-socket structure to maintain stability, and needs to fuse the prosthesis on the metacarpal side with the metacarpal bone, which cannot completely restore the wrist joint. function and activity

[0004] In addition, the ball-and-socket wrist prosthesis is not suitable for large bone defects of the radius and ulna

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