Wroblewski B M, Lynch M, Atkinson J R, Dowson D, Isaac G H
J Bone Joint Surg Br. 1987 Jan;69(1):61-3. doi: 10.1302/0301-620X.69B1.3818735.
We examined 59 cemented high density polyethylene sockets removed at revision hip arthroplasty. Of these 19 showed areas of wear between the outside of the socket and the acetabular bone. This was associated with lack of acrylic cement in those areas and was also related to the depth of the wear on the articulating surface of the socket. It is suggested that, in some cases, changes at the bone-cement junction are secondary to socket loosening and abrasion against the bone of the acetabulum, rather than to particles migrating from the metal-polyethylene interface. It is therefore important that impingement of the neck of the femoral stem on the edge of the cup be avoided and that, when the socket is inserted, it is not in direct contact with the bone.
我们检查了59个在髋关节翻修术中取出的骨水泥固定的高密度聚乙烯髋臼杯。其中19个显示髋臼杯外侧与髋臼骨之间存在磨损区域。这与这些区域缺乏骨水泥有关，也与髋臼杯关节表面的磨损深度有关。有人认为，在某些情况下，骨-水泥界面的变化是髋臼杯松动和与髋臼骨摩擦的继发结果，而非金属-聚乙烯界面颗粒迁移所致。因此，重要的是要避免股骨干颈撞击髋臼杯边缘，并且在插入髋臼杯时，使其不与骨直接接触。
