Artificial joint with self-repairing textured composite film structure and preparation method

The invention discloses an artificial joint with a self-repairing textured composite film structure and a preparation method. The artificial joint comprises a radiation cross-linked ultra-high molecular weight polyethylene joint cup and a zirconia ceramic joint head, a circular hole micro-texture is processed on the inner surface of the joint cup, a capillary texture is processed on the surface of the joint head, and a layer of self-repairing textured composite film is grafted on the inner surface of the joint cup in friction with the joint head. The texturing adopted by the invention can improve the storage performance and the self-lubricating performance of the lubricating liquid to a great extent, and meanwhile, the self-repairing textured composite film can also enhance the adhesive force on the surface of the joint cup and is firm in combination; and the artificial joint is good in wear resistance and has the functions of self-repairing and sterile loosening prevention, and the service life of the artifi