Medical artificial proximal radioulnar joint prosthesis

Abstract

The invention relates to a medical artificial proximal radioulnar joint prosthesis. The prosthesis comprises a proximal radioulnar joint base, a radial head lining support, an artificial radial head and an artificial radius prosthesis handle; the proximal radioulnar joint base is used for being fixedly connected with the ulna, and the upper end of the proximal radioulnar joint base is provided with a first accommodating groove matched with the radial head lining support; the radial head lining support is embedded in the accommodating groove, and the upper end of the radial head lining supportis provided with a second accommodating groove corresponding to the artificial radial head; the artificial radial head is arranged in the second accommodating groove and can rotate around the radial head lining support; the artificial radius prosthesis handle is of a vertical rod-shaped structure, the upper end of the artificial radius prosthesis handle sequentially penetrates through the proximalradioulnar joint base and the radial head lining support and then is detachably connected with the middle of the lower end of the artificial radial head, and the lower end of the artificial radius prosthesis handle is used for being inserted along the radius medullary cavity and fixedly connected with the radius. The prosthesis has the advantages that the structural design is reasonable, the prosthesis can be effectively used for surgical treatment of congenital proximal radioulnar joint fusion, the proximal radioulnar joint can be reconstructed, and the rotation function of the forearm can be restored.

Description

technical field [0001] The invention belongs to the technical field of medical devices, in particular to a medical artificial upper radioulnar joint prosthesis. Background technique [0002] Congenital superior radioulnar joint fusion is a rare disease characterized by the bony connection between the radius and the proximal end of the ulna, resulting in the forearm being fixed in pronation and unable to supinate. First described by Saniford in 1973. Because the disease is a congenital disorder of unknown cause, patients often have congenital supinator muscle dysplasia or even absence, so the effect of simple separation operation is not satisfactory, and refusion is prone to occur. None of the existing surgical methods can restore the normal structure of the upper radioulnar joint. A few scholars use surgical treatment, which can only restore part of the function or have problems such as joint instability. Contents of the invention [0003] The technical problem to be sol...

AI Technical Summary

Problems solved by technology

Because the disease is a congenital disorder of unknown cause, patients often have congenital supinator muscle dysplasia or even absence, so the effect of simple separation operation is not satisfactory, and refusion is easy to occur

None of the existing surgical methods can restore the normal structure of the upper radioulnar joint. A few scholars use surgical treatment, which can only restore part of the function or have problems such as joint instability.

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