Posterior Cruciate Ligament (PCL)
The PCL is just behind the ACL, deep inside the knee. It is most commonly injured in isolation, usually from a direct blow to the tibia (shin bone) that forces the knee back. When the PCL is injured, it is rare that an operation is needed. It usually heals in a slightly stretched position, but the knee rarely feels unstable. However, when the PCL is injured alongside another ligament it often requires reconstruction. This can be a technically challenging operation as access to the back of the knee is difficult. The graft choice is usually only hamstrings, but the LARS ligament can sometimes be used.