How are posterolateral corner (PLC) knee injuries assessed, and when is surgical intervention needed?

Doctor’s answer

The posterolateral corner (PLC) comprises the fibular collateral ligament, popliteus tendon, and popliteofibular ligament. The Dial test assesses external rotation asymmetry at 30° and 90° of knee flexion, differentiating isolated PLC injury from combined PLC-PCL disruptions. Mild isolated injuries (Grades I-II) are often managed non-operatively with bracing, whereas severe Grade III tears or multiligament combined injuries typically warrant anatomic repair or reconstruction.

This content is for education. Diagnosis, treatment, and rehabilitation require an individual assessment by a sports medicine specialist.