ARTIFICIAL SHOULDER JOINT PROSTHESIS MADE FROM ORGANIC POLYMER MATERIALS

摘要

An artificial shoulder joint prosthesis made from organic polymer materials comprises a ball head (2) and a humerus handle (3). The inner surface of the ball head (2) is concave. The inner surface of the ball head (2) is connected to the humerus handle (3). The outer surface of the ball head (2) directly matches a joint cartilage of a human body. The ball head (2) consists of polyetheretherketone or a derivative thereof. The ball head (2) is placed in a fossa of the human body in use, so as to form a half shoulder joint prosthesis. A total shoulder joint prosthesis and a reverse shoulder joint prosthesis. Each further comprises a shoulder joint cavity prosthesis (1) and a cup (4). Implant components of the shoulder joint prosthesis consist of polymer materials, thereby reducing the problems of allergy and toxicity possibly caused by metal corrosion and metal. The elastic modulus of the PEEK material used in the prosthesis matches a natural bone, thereby alleviating the stress shielding problem. The sliding friction surface of the prosthesis to the joint cartilage alleviates the problem of abrasion. All the implant components in the prosthesis do not interfere with magnetic resonance imaging.