You are here:
The common peroneal nerve is one of the three major nerves that supplies the muscle and feeling of the lower leg. This nerve is formed in the lower lumbar spine and is part of the sciatic nerve. The nerve exits the pelvis and runs down the back of the thigh. Around the level of the knee are the sciatic nerve divides and one of these branches is the common peroneal nerve.
The nerve then wraps around the fibula which is the bone which is located on the outside of the knee joint and lower leg. It then passes into the front part of the lower leg. It is within this part of the leg that the nerve supplies the muscles that control the foot and toes. The nerve also gives branches to areas of skin over the lower leg and foot.
The nerve can be compressed in its course around the outer part of the knee. This may be due to:
There may be no cause found.
The symptoms that can occur with this condition are:
The most common test performed is a:
For more information on St Vincent's Neuroscience services and additional resources visit our dedicated Neuroscience site here.