Fig. 1From: Does posterior tibial slope laterality exist? A matched cohort study between ACL-injured and non-injured kneesA 17-year-old female had an ACL injury in her left knee. A lateral view of the knee shows a PTS of (A) 9° on the right and (B) 13° on the left, with a 4°-difference between the right and left. A 23-year-old woman with bilateral ACL injury after ACL reconstruction. A lateral view of the knee shows a PTS of (C) 11° on the right and (D) 16° on the left with a 5° left–right difference. The right knee joint is clinically stable, whereas the left was re-injuredBack to article page