Scheller G, Schwarz M, Früh H J, Jani L
Orthopädische Klinik, Klinikum Mannheim, Germany.
Arch Orthop Trauma Surg. 1999;119(1-2):13-7. doi: 10.1007/s004020050347.
Hip simulator trials were conducted to determine the initial wear between alumina femoral heads and carbon fibre reinforced plastic (CFRP, CAPROMAN) insert in a titanium socket. A force of 2500 N and a frequency of 0.857 H were applied. Using surface and sphericity measurement techniques, the amount of wear was determined. After 500,000 cycles, the centre of the head had moved by 10 microm into the insert, and the average radius increased by 2 microm. After 1 million cycles, the additional changes were less than 1 microm. Based on an examination of retrieved implants (wear rate: 6.1 microm/year) and based on the simulator results, the combination alumina-CFRP inserts could be approved for total hip replacement.
进行了髋关节模拟器试验，以确定氧化铝股骨头与钛臼中碳纤维增强塑料（CFRP，CAPROMAN）内衬之间的初始磨损情况。施加了2500 N的力和0.857 H的频率。使用表面和球度测量技术来确定磨损量。在500,000次循环后，股骨头中心向内衬移动了10微米，平均半径增加了2微米。在100万次循环后，额外的变化小于1微米。基于对取出的植入物的检查（磨损率：6.1微米/年）以及模拟器结果，氧化铝-CFRP内衬组合可被批准用于全髋关节置换。
