The Impact of Wear and Lift-Off on Coronal Plane Alignment in TKA and Implications to Future Constrained Revision: A Retrieval Study

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• 作者：Pieter-Jan T.K. Vandekerckhove ; MD^a ; ^b ; ; Matthew G. Teeter ; PhD^a ; Douglas D.R. Naudie ; MD^a ; James L. Howard ; MD^a ; Steven J. MacDonald ; MD^a ; Brent A. Lanting ; MD^a
• 关键词：coronal plane alignment ; total knee arthroplasty ; retrieval study ; wear ; lift-off ; constrained
• 刊名：The Journal of Arthroplasty
• 出版年：2015
• 出版时间：November 2015
• 年：2015
• 卷：30
• 期：11
• 页码：2017-2020
• 全文大小：258 K

文摘

Current discussion exists whether to position a total knee arthroplasty (TKA) in slight undercorrection in varus osteoarthritis. The goal of this study was to analyse the effect of wear and lateral lift-off in primary TKA on coronal plane alignment and the implication to future constrained revision TKA. Seventy-six retrieved tibial inserts were analysed for the ratio of wear (RW), lateral lift-off and implications for future constrained revision surgery according to the coronal plane alignment. The RW significantly affects the coronal plane alignment in TKA. Progressive wear and lateral lift-off were seen with progressive varus alignment. However, there was no difference in constrained revision between mild varus and moderate varus aligned TKAs.