ARTIFICIAL IMPLANT FOR TRAPEZIOMETACARPAL JOINT

摘要

An artificial implant for a trapeziometacarpal joint is provided. The artificial implant has a joint replacement portion and at least two insertion rods. The insertion rods of the artificial implant can help to decrease the wound area during the implantation of the artificial implant in order to accelerate the speed of tendon reattachment after implanting and to enhance the ability of anti-rotation.

主权项

1. An artificial implant for a trapeziometacarpal joint, comprising:
a joint replacement portion formed with a connection surface for connecting to a cut end of a first bone and an articular profile surface for connecting to a joint surface of a second bone; and at least two insertion rods protruded from the connection surface and spaced from each other for inserting into two holes formed on the cut end of the first bone, wherein the connection surface has a long diameter and a short diameter, and the long diameter is perpendicular to the short diameter, and the length of each of the insertion rods is shorter than the short diameter; and at least one fin protruded from an edge portion of the connection surface for inserting into a groove formed on the cut end of the first bone, wherein the fin is equidistantly spaced from both of the two insertion rods, and the fin is provided on the edge portion of the connection surface at one end of the long diameter.