Methods, apparatus, and systems for improving the performance of articulating prostheses. Some embodiments include a first component having a first articulating surface, and a second component having a second articulating surface configured to articulate with the first articulating surface. You may provide the component of. One or both of the first and second components may comprise a silicon nitride ceramic material. One or both of the first and second articulating surfaces may increase the hardness of the first articulating interface surface, decrease the coefficient of friction between the first and second articulating surfaces； Reduction of the effects of wear between the first and second articulating surfaces and the acoustic noise produced by the endoprosthesis resulting from the joint between the first and second articulating surfaces during use A coating configured to achieve at least one of the strength reductions may be provided. [Selection] Figure 1関節をなす補綴物の性能を向上する方法、機器、およびシステム。いくつかの実施形態は、第１の関節をなす面を有する第１の構成要素と、第１の関節をなす面と関節をなすために構成された第２の関節をなす面を有する第２の構成要素を備えてもよい。第１および第２の構成要素のうちの１つまたは両方は、窒化ケイ素セラミック素材を含んでもよい。第１および第２の関節をなす面のうちの１つまたは両方は、第１の関節をなすインタフェース面の硬度の増加、第１および第２の関節をなす面の間の摩擦率の減少、第１および第２の関節をなす面の間の摩耗の影響の減少、および、使用のあいだ第１および第２の関節をなす面の間の関節からもたらされる内部人工器官により生じる聴覚的ノイズの強度の減少のうち少なくとも１つを達成するよう構成されたコーティングを備えてもよい。【選択図】図１
