MCL/LCL Injury

Sprains of the medial and lateral collateral ligaments (MCL and LCL) are common knee injuries.

The MCL is a ligament that runs along the inside of your knee joint. It connects your thighbone (femur) to your shinbone (tibia).

The LCL is a ligament that connects the thighbone and calf bone on the outside of your knee (fibula).