Cautilli G P, Beight J, Yao B, Hozack W J
Rothman Institute, Pennsylvania Hospital, Philadelphia 19107.
Semin Arthroplasty. 1994 Jan;5(1):25-9.
Three hundred thirteen primary uncemented total hip arthroplasties were performed in a 20-month period using Universal cups and Taperloc stems with titanium heads. The follow-up period was 2 to 5 years and 303 cups were measured radiographically for polyethylene wear, demarcation, osteolysis, and migration. Analysis was performed clinically, radiographically, and via inspection at revision. Twenty-three cups (7.5%) had greater than 0.5 mm polyethylene wear. Eleven of these loosened radiographically (4%) and eight (3%) required revision. All cup failures showed evidence of polyethylene wear as a contributory cause of failure. The average rate of wear was 0.5 mm/yr. Thin polyethylene liners (less than 6 mm) and titanium heads were used in all failed implants both of which have been abandoned.
在20个月的时间里，使用通用髋臼杯和带钛头的Taperloc股骨柄进行了313例初次非骨水泥型全髋关节置换术。随访时间为2至5年，对303个髋臼杯进行了X线检查，以测量聚乙烯磨损、分界、骨溶解和移位情况。通过临床、X线检查以及翻修时的检查进行分析。23个髋臼杯（7.5%）的聚乙烯磨损超过0.5毫米。其中11个在X线片上显示松动（4%），8个（3%）需要翻修。所有髋臼杯失败均显示聚乙烯磨损是导致失败的一个原因。平均磨损率为每年0.5毫米。所有失败的植入物均使用了薄聚乙烯衬垫（小于6毫米）和钛头，这两种材料现已不再使用。
