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MRI Based Comparison of Tibial Bone Coverage by Five Knee Prosthesis: Anthropometric Study in Indians

Published:April 08, 2015DOI:https://doi.org/10.1016/j.arth.2015.03.041

      Abstract

      This MRI based study evaluates morphological differences of proximal tibia (total cross-sectional area, mediolateral and anteroposterior distance) 8–10 mm distal to the lateral tibial plateau. We evaluated the difference in the coverage of the tibial surface between symmetric and asymmetric tibial trays and difference in coverage between males and females. 150 patients who underwent MRI scans for sports related soft tissue injury without osteoarthritis were studied. The tibial trays of the 5 total knee arthroplasty designs (4 symmetric and 1 asymmetric) were scanned. Mean total tibial coverage of all designs was more than 80%. Asymmetric baseplate had maximum total tibial coverage and maximum rate of optimal fit, with only 2% absolute overhang posterolaterally. Females had better tibial coverage as compared to males.

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