The medial collateral ligament (MCL) connects the thighbone to the shinbone and helps stabilizes the inner side of the knee. A blow to the outside of the knee may cause injury to the MCL which may be accompanied by sharp pain on the inside of the knee.
Conservative treatment is usually effective if the medial collateral ligament (MCL) has a small partial tear: RICE: Rest, Ice, Compression, Elevation. Physical therapy and an exercise program are usually recommended to promote healing and restore knee strength. Severe tears may require surgical repair.