Common peroneal nerve lesion

The sciatic nerve divides into the tibial and common peroneal nerves. Injury often occurs at the neck of the fibula

The most characteristic feature of a common peroneal nerve lesion is foot drop.

Other features include:

• weakness of foot dorsiflexion
• weakness of foot eversion
• weakness of extensor hallucis longus
• sensory loss over the dorsum of the foot and the lower lateral part of the leg
• wasting of the anterior tibial and peroneal muscles