Symptoms

Signs and symptoms of a PCL injury can include:

• Pain. Mild to moderate pain in the knee can cause a slight limp or difficulty walking.
• Swelling. Knee swelling occurs rapidly, within hours of the injury.
• Instability. Your knee might feel loose, as if it's going to give way.

If there are no associated injuries to other parts of your knee, the signs and symptoms of a posterior cruciate ligament injury can be so mild that you might not notice that anything's wrong. Over time, the pain might worsen and your knee might feel more unstable. If other parts of your knee have also been injured, your signs and symptoms will likely be more severe.