If the medial collateral ligament has been damaged or torn, you will usually have:
- Pain, which can range from mild to severe, depending on how serious the injury is
- Tenderness along the inside of the knee
- A feeling that the injured knee may give way under stress or may lock or catch.
Causes and Risk Factors
Injuries to the medial collateral ligament most often happen when the knee is hit directly on its outer side. This stretches the ligaments on the inside of the knee too far or can tear them. It is not uncommon for athletes to suffer tears of the medial collateral ligament and anterior cruciate ligament at the same time. The ligament also can be injured through repeated stress. This causes the ligament to lose its normal stretch and elasticity similar to a worn-out rubber band.