The posterior cruciate ligament is considerably thicker and stronger than the ACL and is also made up of two bundles of fibres.
These pass forwards from the back (posterior) to the front (anterior) of the knee. It is attached at its lower end to quite a broad area of the back of the upper tibia.
This is its posterior attachment. From there it leads upwards and forwards ending up attached to the inner part of the medial femoral condyle which forms its anterior attachment.
- The two bundles of fibres are also aligned so that one band becomes tight in rather more flexion and the other band becomes tight in more extended positions of the knee.
- Like the ACL the PCL contributes to stabilisation of knee movements so that the joint surfaces of the tibia remain properly aligned to the femur in all stages of knee bend. Without it the tibia becomes unstable in relation to the femur and tends to slide backwards under load.
- Lesions to the Posterior Cruciate Ligament (PCL) are rarer than those to the ACL, and are seen more often following a traffic accident.
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Symptoms are also less severe, with pain and swelling in the knee presenting sometime after the injury was sustained, making diagnosis more difficult.
Again, we have a great deal of experience dealing with these kinds of knee injuries, without resorting to surgery, through physiotherapy and effective rehabilitation exercises.
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