Posterior Oblique Ligament

Injury to the posterior oblique ligament is generally suggestive of concomitant damage to other ligamentous structures in the knee. A thorough history and exam are required to identify potential injury to the medial collateral ligament and cruciate ligaments. Imaging should include valgus stress radiographs and magnetic resonance imaging. For medial-sided injuries involving the posterior oblique ligament, surgical reconstruction using anatomic principles is recommended. A complete understanding of the anatomy of the superficial medial collateral ligament and posterior oblique ligament is crucial for accurate tunnel placement and graft viability. Rehabilitation should begin on postoperative day 1 and focus on protected range of motion and quadriceps strengthening. With good adherence to rehabilitation protocols, patients can expect to return to normal activity within 6–9 months following surgery.