The Posterior Cruciate Ligament prevents the tibia from sliding backwards too much and also helps stabilise the knee in rotational movements.
Injuries to the PCL are generally the result of a direct blow to the front of the knee when the leg is in a bent position, (such as falling on a bent knee).
PCL injuries can also occur when the knee twists or straightens too much (hyperextends).
Isolated PCL injuries generally do not cause instability. A large amount of instability may mean there is a PCL injury combined with an injury to another specific section of the knee called the posterolateral corner.
Treatment depends on how severe the injury is, and whether it is an isolated or combined injury. Rehabilitation is a vital component of recovery in both surgical and conservative cases.
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