A torn (LCL), is an injury to the lateral collateral ligament, a ligament extending from the top-outside surface of the fibula to the bottom-outside surface of the femur. The ligament prevents the knee joint from side-to-side (lateral) instability.

Review Date: 12/4/2001 12:00:00 AM Reviewed By:A.D.A.M. Medical Illustration Team

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