The wear performance study of artificial joint products should be based on the entire joint system, and its wear performance is affected by many factors, such as joint surface materials that match the polyethylene components, product processing technology, radiation dose, shape design, specifications and dimensions. Therefore, even if the wear resistance of highly cross-linked ultra- high molecular weight polyethylene is better than that of ordinary ultra-high molecular weight polyethylene, it cannot demonstrate that the wear performance of the artificial joint products of highly crosslinked ultra-high molecular weight polyethylene is better than that of ordinary ultra-high molecular weight polyethylene.