DefinitionCommon peroneal nerve dysfunction is damage to the peroneal nerve leading to loss of movement or sensation in the foot and leg.Alternative NamesNeuropathy - common peroneal nerve; Peroneal nerve injury; Peroneal nerve palsyCauses, incidence, and risk factorsThe peroneal nerve is a branch of the sciatic nerve, which supplies movement and sensation to the lower leg, foot and toes. Common peroneal nerve dysfunction is a type of peripheral neuropathy(damage to nerves outside the brain or spinal cord). This condition can affect people of any age.Dysfunction of a single nerve, such as the common peroneal nerve, is called a mononeuropathy. Mononeuropathy implies there is a local cause of the nerve damage, although certain bodywide conditions may also cause isolated nerve injuries.Damage