Description
Background: Posterior tibial slope (PTS) has been shown to be a potential risk factor in relation to anterior cruciate ligament (ACL) injuries. The impact of PTS on treatment outcomes in ACL revision patients has not been investigated to date.
Purpose: To investigate the impact of PTS on postoperative outcome in an ACL revision cohort, based on sagittal knee stability and subjective, patient-reported knee function.
Study design: Retrospective cohort study.
Methods: Lateral knee radiographs from 105 ACL revision patients were retrospectively reviewed and measured. Objective knee stability was based on Rolimeter measurements. The subjective knee function was obtained through the Knee Numeric-Entity Evaluation Score (KNEES-ACL), the Knee Injury and Osteoarthritis Outcome Score (KOOS) and Tegner Activity Scale questionnaires.
Results: No significant association between PTS and knee stability and subjective knee function was found. The mean lateral PTS was 3.1° steeper than the medial PTS.
Conclusion: In the present study, PTS was not found to be associated with either knee stability or subjective knee function in ACL revision patients. Patients undergoing ACL revision surgery have a greater mean difference between the medial and the lateral PTS.
