Medial Collateral Ligament (MCL) Stability Test on Knee Examination Medial Collateral Ligament stability can be tested at 0 and 30 degrees of flexion by applying a valgus force to the lateral knee. Laxity indicates a partial or complete ligamentous tear. Video via @open_michigan #Medial #Collateral #Ligament #MCL #Stability #Test #Knee #PhysicalExam #clinical #video #sports #msk #orthopedics