Fig. 5From: Proximal tibial morphology and risk of posterior tibial cortex impingement in patients with AA-sized Oxford unicompartmental knee arthroplasty tibial implantsComparison of the minimal distance between the tibial keel and posterior tibial cortex in patients with or without a high preoperative posterior slope angle (PSA). a A smaller PSA with a larger distance between the keel and posterior cortex. b A larger PSA with a smaller distance between the keel and posterior cortexBack to article page