Williams V G, Whiteside L A, White S E, McCarthy D S
Biomechanical Research Laboratory, Missouri Bone and Joint Center, St. Louis, USA.
J Arthroplasty. 1997 Jan;12(1):25-31. doi: 10.1016/s0883-5403(97)90043-7.
Locking mechanisms and metal-liner interface surfaces of six modular acetabular systems were evaluated to determine their effect on micromotion and backside wear of the polyethylene liner. Rotational and axial motion between the metal shell and polyethylene liner was measured in the Duraloc (DePuy, Warsaw, IN), Harris-Galante (Zimmer, Warsaw, IN), Impact (Biomet, Warsaw, IN), Lip Loc (Biomet), Precision Osteoloc (Howmedica, Rutherford, NJ), and Reflection (Smith & Nephew Orthopaedics, Memphis, TN) designs at the start of each test, and at 1 million, 5 million, and 10 million cycles. At 10 million cycles, the Lip Loc and Reflection cups had significantly lower rim micromotion than the Duraloc and Harris-Galante cups (F < .0010). The Impact, Precision Osteoloc, and Reflection cups had significantly lower rim subsidence than the Harris-Galante cup (F < .0025). The Harris-Galante cup had significantly greater rotational micromotion than the Lip Loc cup (F < .0074), and had significantly greater interface slippage than the Impact and Reflection cups (F < .0070). The Lip Loc produced significantly lower dome micromotion than the Harris-Galante (F < .0300). The Lip Loc and Reflection cups had significantly less backside wear than the Duraloc and Harris-Galante cups (P < .0001), the Impact cup (P < .0243), and the Precision Osteoloc (P < .0027) cup.
对六种模块化髋臼系统的锁定机制和金属内衬界面表面进行了评估，以确定它们对聚乙烯内衬的微动和背面磨损的影响。在每次测试开始时以及100万、500万和1000万次循环时，测量了Duraloc（DePuy，印第安纳州华沙）、Harris-Galante（Zimmer，印第安纳州华沙）、Impact（Biomet，印第安纳州华沙）、Lip Loc（Biomet）、Precision Osteoloc（Howmedica，新泽西州卢瑟福）和Reflection（史赛克骨科，田纳西州孟菲斯）设计中金属杯和聚乙烯内衬之间的旋转和轴向运动。在1000万次循环时，Lip Loc和Reflection杯的边缘微动明显低于Duraloc和Harris-Galante杯（F <.0010）。Impact、Precision Osteoloc和Reflection杯的边缘下沉明显低于Harris-Galante杯（F <.0025）。Harris-Galante杯的旋转微动明显大于Lip Loc杯（F <.0074），并且其界面滑动明显大于Impact和Reflection杯（F <.0070）。Lip Loc产生的穹顶微动明显低于Harris-Galante杯（F <.0300）。Lip Loc和Reflection杯的背面磨损明显少于Duraloc和Harris-Galante杯（P <.0001）、Impact杯（P <.0243）和Precision Osteoloc杯（P <.0027）。
