Fig. 2From: Varus-valgus instability in the anterior cruciate ligament-deficient knee: effect of posterior tibial loadTesting protocol. All procedures were carried out under fixation of the natural internal-external rotational positions at 30° and 60° of flexion, respectively. Intact: intact knee, ACLD: ACL-deficient knee, ACLD P : ACL-deficient knee with additional 30 N of posterior tibial loadBack to article page