That is, place one hand on the thigh and the other on the dorsum of the calf. Stabilizing the thigh, try and move the tibia posterior on the thigh. To test for the integrity of the tibial collateral ligament , keep the knee flexed and place one hand on the ankle. The other hand is placed on the outside of the thigh. Put a valgus stress on the knee by moving the ankle outward and pressing inward on the knee.
Excessive movement indicates a problem with the tibial collateral ligament.
To test for the integrity of the fibular collateral ligament , keep the knee flexed and place one hand on the ankle. The other hand is placed on the inside thigh. Put a varus stress on the knee by moving the ankle inward while moving the thigh outward. The medial meniscus is likely to be torn because the tibial collateral ligament attaches to this meniscus. Tears of the tibial collateral ligament often result in tearing of the medial meniscus.