Davey J R
Division of Orthopedic Surgery, Toronto Hospital, Toronto Western Division, Ont.
Can J Surg. 1995 Feb;38 Suppl 1:S46-8.
Significant improvements have been made in the long-term results of cemented femoral components, but there has been little improvement in the results of cemented acetabular components. Polyethylene wear debris has been proposed as the most important factor causing loosening of cemented acetabular components. Polyethylene thickness and femoral-head size affect the rate of acetabular wear and loosening. The early results of total hip arthroplasty with noncemented acetabular components are promising, and many feel that they represent the state of the art. The hemispheric components with a porous coating have proven superior to most of the screw ring designs. There are potential disadvantages with the use of screws to augment fixation of the hemispheric components, and recently it has become popular to under-ream the acetabulum and press-fit the oversized acetabular component without the use of screws.
骨水泥型股骨假体的长期效果已取得显著改善，但骨水泥型髋臼假体的效果改善甚微。聚乙烯磨损碎屑被认为是导致骨水泥型髋臼假体松动的最重要因素。聚乙烯厚度和股骨头尺寸会影响髋臼磨损和松动的发生率。非骨水泥型髋臼假体全髋关节置换术的早期结果很有前景，许多人认为它们代表了当前的先进水平。带有多孔涂层的半球形假体已被证明优于大多数螺圈设计。使用螺钉增强半球形假体固定存在潜在缺点，最近不使用螺钉而对髋臼进行扩孔并压配超大号髋臼假体变得很流行。
