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Peroneal Nerve Dysfunction

Peroneal nerve dysfunction is characterized by loss of movement or sensation in the foot and lower leg. It is caused by damage to the poreanel nerve which branches off from the sciatic nerve. The poroneal nerve provides movement and sensation to the lower leg, foot and toes

Causes of peroneal nerve dysfunction:

There are several major causes of peroneal nerve dysfunction. The main two causes are trauma or injury to the knee and fracture of the fibula. Other causes include

  • Use of a tight plaster cast (or other long-term constriction) of the lower leg
  • Habitual leg crossing
  • Regularly wearing high boots
  • Pressure to the knee from positions during deep sleep
  • Injury during knee surgery.

Symptoms of peroneal nerve dysfunction:

The main symptom is a lost of feeling or sensation in the foot especially the top of the foot. It can cause weakness in your ankle or foot and effect the way you walk. You also might not be able to hold your foot horizontal or your toes may drag as you walk.

Treatment of of peroneal nerve dysfunction:

Treatment is aimed at maximizing mobility and independence. The cause should be corrected, if possible, to reduce further damage.

If there is no history of trauma to the area, the condition developed suddenly with minimal sensation changes and no difficulty in movement, and there is no test evidence of nerve axon degeneration, then a conservation treatment plan will probably be recommended.

Corticosteroids injected into the area may reduce swelling and pressure on the nerve in some cases.

Surgery may be required if the disorder is persistent or symptoms are worsening, if there is difficulty with movement, or if there is evidence on testing that the nerve axon is degenerating. Surgical decompression of the area may reduce symptoms if the disorder is caused by entrapment of the nerve. Surgical removal of tumors or other conditions that press on the nerve may be of benefit.

Other treatment may include

  • Using over the counter or prescription drugs to threat pain.
  • Antidepressants may be used to control the stabbing pains
  • Physical therapy
  • The use of orthopedic devices to help with walking





This web site is intended for your own informational purposes only. No person or entity associated with this web site purports to be engaging in the practice of medicine through this medium. The information you receive is not intended as a substitute for the advice of a physician or other health care professional. If you have an illness or medical problem, contact your health care provider.


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