Nevelös A B, Evans P A, Harrison P, Rainforth M
Bradford Royal Infirmary.
Proc Inst Mech Eng H. 1993;207(3):155-62. doi: 10.1243/PIME_PROC_1993_207_288_02.
Materials analysis has been conducted on retrieved Mittelmeier-Autophor ceramic components from total hip arthroplasties, correlating articulating surface wear morphology with clinical reasons for failure. Plastically deformed, agglomerated wear debris (30-60 microns) has been identified on femoral head articulation wear surfaces, displaying exaggerated wear, especially during the initiation stage. Such surfaces were associated with clinical failures involving displacement of the acetabular cup and perforation of the cortex by the femoral stem. It is thought that this wear debris may play an important role in the promotion of the 'avalanche' wear mechanism, as it is adherent and thus difficult to remove from the wear interface.
已对从全髋关节置换术中取出的Mittelmeier-Autophor陶瓷组件进行了材料分析，将关节表面磨损形态与临床失败原因相关联。在股骨头关节磨损表面已识别出塑性变形、团聚的磨损碎屑（30 - 60微米），显示出过度磨损，尤其是在起始阶段。此类表面与髋臼杯移位和股骨干皮质穿孔的临床失败相关。据认为，这种磨损碎屑可能在促进“雪崩”磨损机制中起重要作用，因为它具有附着力，因此难以从磨损界面去除。
