Posterior Cruciate Ligament (PCL)

How the PCL works and what it stabilises:

The PCL connects the posterior intercondylar area of the tibia to the medial condyle of the femur. This configuration allows the PCL to resist forces pushing the tibia posteriorly relative to the femur i.e. it limits anterior rolling of femur in tibial plateau during extension, prevennts anterior displacement of tibia on femur and prevents hyperflexion of knee.

In the weight-bearing flexed knee it is the main stabilising factor for the femur

What happens if the PCL is injured?

With damage to the PCL there tends to be knee instability and the tibia tends to ‘sag’ backwards when the knee is flexed to 90 degrees

If left untreated the knee may repeatedly give way leading to pobbisle additional injury or even arthritis


~ by pcl4 on September 22, 2008.

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