Rieker C B, Joyce T, Unsworth A, Hagena F-W, Meuli C
Centerpulse, Winterthur, Schweiz.
Orthopade. 2003 Sep;32(9):784-8. doi: 10.1007/s00132-003-0523-1.
It is the goal of this paper to introduce modern tribological investigations into the development of a new finger prosthesis, with the particular aim of optimising the material component.A new, unconstrained metacarpophalangeal prosthesis restoring the anatomy of the joint has been developed in two versions (UHMWPE-metal and PEEK-metal). In order to determine the version having better wear behaviour, these two versions were tested on a Joyce finger simulator. As the UHMWPE-metal version showed a lower amount of wear in vitro, this version was chosen to conduct a clinical study. This investigation showed the importance of conducting an in vitro wear test before any clinical studies. Such tests allow the optimisation of the wear behaviour of the tested metacarpophalangeal prosthesis and therefore permit a minimisation of the possible risks to the patients.
本文的目标是将现代摩擦学研究引入新型手指假体的开发中，特别旨在优化材料组件。一种恢复关节解剖结构的新型无约束掌指关节假体已开发出两种版本（超高分子量聚乙烯-金属和聚醚醚酮-金属）。为了确定磨损性能更好的版本，这两个版本在乔伊斯手指模拟器上进行了测试。由于超高分子量聚乙烯-金属版本在体外显示出较低的磨损量，因此选择该版本进行临床研究。这项研究表明了在任何临床研究之前进行体外磨损测试的重要性。此类测试可优化测试的掌指关节假体的磨损性能，从而将对患者可能的风险降至最低。
