Fig. 8From: Comparison of posterior cruciate retention and substitution in total knee arthroplasty during gait: a systematic review and meta-analysisPeak values of knee flexion and extension at defined points of the gait cycle. F1—flexion at heel strike, F2—maximum flexion during loading response, F3—flexion range during loading, F4—minimal flexion at terminal stance, F5—maximal flexion at swing, F6—total flexion during the gait cycleBack to article page