Rodricks David J, Patil Shantanu, Pulido Pamela, Colwell Clifford W
Shiley Center for Orthopaedic Research and Education at Scripps Clinic, 11025 North Torrey Pines Road, Suite 140, La Jolla, CA 92037, USA.
J Bone Joint Surg Am. 2007 Jan;89(1):89-95. doi: 10.2106/JBJS.E.00492.
The Press-Fit Condylar total knee arthroplasty implant design has been used by many orthopaedic surgeons over the last twenty years. The design has survived with relatively minor modifications and remains a popular implant system today. The present study represents the fourteen to seventeen-year results for our patients who were described in our previous report on the eight to ten-year results.
The senior author performed 160 consecutive total knee arthroplasties with use of the Press-Fit Condylar cruciate-retaining device in 134 patients between 1986 and 1989. The mean age of the patients at the time of the index procedure was 70.5 years. Follow-up data were available for sixty-three of sixty-four surviving knees. Surviving patients were followed for a mean of 15.8 years. The knees were evaluated on the basis of Knee Society function and clinical scores, radiographs, and survivorship analysis.
The mean Knee Society function score was 65, and the mean clinical score was 89. The overall survival rate of the knee was 91.5% with revision for any reason as the end point and 97.2% with aseptic loosening as the end point. The rate of revision of the tibial insert because of wear-related aseptic loosening was 2.5%. We found no relationship between revision and the shelf life or method of sterilization of the polyethylene insert. Radiolucent lines were present in 62% (twenty-one) of thirty-four knees; all radiolucent lines were nonprogressive. None of the implants were loose according to the criteria of the Knee Society.
This long-term analysis indicates that the Press-Fit Condylar total knee implant is a successful implant system with excellent longevity.
在过去二十年里，许多骨科医生都使用过压配型髁型全膝关节置换植入物设计。该设计经过相对较小的改进后留存下来，至今仍是一种流行的植入系统。本研究展示了我们之前报告中八至十年结果的患者的十四至十七年结果。
资深作者于1986年至1989年间，在134例患者中连续进行了160例使用压配型髁型保留交叉韧带装置的全膝关节置换术。初次手术时患者的平均年龄为70.5岁。六十四例存活膝关节中的六十三例有随访数据。存活患者的平均随访时间为15.8年。根据膝关节协会功能和临床评分、X线片以及生存率分析对膝关节进行评估。
膝关节协会功能平均评分为65分，临床平均评分为89分。以任何原因翻修为终点，膝关节的总体生存率为91.5%；以无菌性松动为终点，生存率为97.2%。因磨损相关无菌性松动而翻修胫骨衬垫的发生率为2.5%。我们发现翻修与聚乙烯衬垫的保质期或灭菌方法之间没有关联。34例膝关节中有62%（21例）出现透亮线；所有透亮线均无进展。根据膝关节协会的标准，没有植入物松动。
这项长期分析表明，压配型髁型全膝关节植入物是一种成功的植入系统，具有出色的长期效果。
