The purpose of the present study was to determine the long-term clinical and radiographic results, survival rate, prevalence of osteolysis, and prevalence of fracture of the tibial polyethylene insert following total knee arthroplasty (TKA). Three hundred patients (600 knees) were included in this follow-up study. The mean age of the patients (and standard deviation) was 60.3 ± 4.3 years, and the mean duration of follow-up was 13.2 years (range, 12 to 14 years). Revision of the TKA prosthesis was performed in 7 knees (2.3%) with a compression-molded polyethylene (CPE) tibial insert and 6 knees (2%) with a highly cross-linked polyethylene (HXLPE) tibial insert. The rate of survival at 14 years was 97.7% (95% confidence interval [CI], 94%-100%) in the CPE group and 98% (95% CI, 94%-100%) in the HXLPE group with reoperation for any reason as the end point. The rate of survival at 14 years was 98% (95% CI, 94%-100%) in both groups with reoperation for mechanical failure as the end point. No knee had osteolysis or fracture of the tibial polyethylene insert. There were no between-group differences.

Level of Evidence: 

Therapeutic Level I. See Instruction for Authors for a complete description of levels of evidence.

中文翻译：

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对年轻患者后十字形置换TKA的高度交联和压缩模制聚乙烯插件的长期评估：先前报告的简要随访。

本研究的目的是确定全膝关节置换术（TKA）后胫骨聚乙烯插入物的长期临床和放射学结果，存活率，溶骨率和骨折发生率。这项追踪研究纳入了300名患者（600膝）。患者的平均年龄（和标准差）为60.3±4.3岁，平均随访时间为13.2年（范围12至14岁）。使用压缩成型聚乙烯（CPE）胫骨插入物对7膝（2.3％）进行了TKA修复，使用高度交联聚乙烯（HXLPE）胫骨插入物对6膝（2％）进行了修复。CPE组14年生存率分别为97.7％（95％置信区间[CI]，94％-100％）和98％（95％CI，HXLPE组中有94％-100％），以任何原因再次手术为终点。两组均以机械故障再次手术为终点，14年生存率均为98％（95％CI，94％-100％）。没有膝盖发生骨溶解或胫骨聚乙烯插入物骨折。组间没有差异。

证据级别： 

治疗I级。有关证据水平的完整说明，请参见《作者须知》。