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Minimum principal strains of tibial cancelous bone in four major models. (a) Intact knee model. (b) Unicompartmental knee arthroplasty model with neutrally aligned tibial tray. (c) Unicompartmental knee arthroplasty model with 10° valgus tibial tray. (d) Unicompartmental knee arthroplasty model with 10° varus tibial tray.
