Retrieval Analysis of Posterior Stabilized Polyethylene Tibial Inserts and Its Clinical Relevance

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• 作者：Hee-Nee Pang ; Paul Jamieson ; Matthew G. Teeter ; Richard W. McCalden ; Douglas D.R. Naudie ; Steven J. MacDonald
• 关键词：knee ; posterior stabilized ; damage ; arthroplasty
• 刊名：The Journal of Arthroplasty
• 出版年：February, 2014
• 年：2014
• 卷：29
• 期：2
• 页码：365-368
• 全文大小：217 K

文摘

This was a retrieval analysis of 83 PS inserts to assess the effect of limb alignment, implant position and joint line position on the pattern of wear in posterior stabilized (PS) tibial inserts. The total damage score was significantly higher in knees with postoperative varus alignment more than 3掳 (P = 0.03). The total damage score to the post was significantly more in knees with joint line elevation more than 5 mm (9.7 卤 3.9, compared to 6.5 卤 3.7 in knees with less joint line elevation) (P = 0.05). Limb malalignment and joint line elevation resulted in more damage in PS inserts. An external rotation subluxation damage pattern was found in joint line elevation.