Principal component analysis as a tool for determining optimal tibial baseplate geometry in modern TKA design

Sare Huijs, Toon Huysmans, Andy de Jong, Nele Arnout, Jan Sijbers, Johan Bellemans

Research output: Contribution to journalArticleScientificpeer-review

3 Citations (Scopus)

Abstract

Optimal tibial component fixation in total knee arthroplasty (TKA) requires maximal tibial bone coverage, optimized mediolateral cortical fit as well as component rotation. Failure to achieve an optimal fit may result in component subsidence and loosening in case of undersizing, or overhang with subsequent soft tissue impingement in case of overhang. To date there is no consensus on optimal tibial component shape, and significant variability exists among different design manufacturers. In this study" principal component analysis" was used as a statistical tool in order to determine the ideal tibia baseplate shape, based upon anthropometric CT-scan data defining an average proximal tibial shape and variations. Gender specificity was evaluated and differences in geometry depending on anatomic constitution (varus, neutral, valgus) were analyzed. The results from our study indicate that in the arthritic knee differences in proximal tibial morphology at the resection level were mainly attributed to size and not shape. This is true for both Caucasian men and women, and is independent from the anatomical constitution.
Original languageEnglish
Pages (from-to)452-460
Number of pages9
JournalActa Orthopaedica Belgica
Volume84
Issue number4
Publication statusPublished - 1 Dec 2018
Externally publishedYes

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