A PCL injury is a less common occurrence than that of an ACL injury. This is due to the thickness and strength of the PCL. However, the most common way in which the PCL is injured is by direct force to the front of the knee, when it is bent. The PCL can also be injured by a direct blow to the outside of the knee joint, such as those that occur during soccer or football.
Symptoms of a PCL tear can vary depending on the instability in the knee. Patients usually see swelling in the back on the knee and bruising 24 to 36 hours after the injury occurred. The other major symptoms of a PCL tear include pain, excessive swelling and chronic instability.
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