Knee Ligament Injury (ACL, PCL, MCL) The majority of stabilization in the knee comes from the ligaments. ... The collateral ligaments provide additional stability on the inside of the knee through the medial collateral ligament (MCL) and outside of the knee through the lateral collateral ligament (LCL).
The ACL crosses in the front of the knee and your Posterior Cruciate Ligament (PCL) crosses along the back of the knee joint. Your Medial Collateral Ligament (MCL) is located on the inner side of your knee.
Although it is larger and stronger than the ACL, the PCL can be torn. PCL tears make up less than 20% of injuries to knee ligaments.
Early medical treatment for knee ligament injury may include:
Rest.
Ice pack application (to reduce swelling that happens within hours of the injury)
Compression (from an elastic bandage or brace)
Elevation.
Pain relievers.