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Applied anatomy common peroneal nerve injury
The common peroneal nerve is most commonly injured in the lower limb because it winds superficially around the neck of the fibula. Injury to this nerve can result in foot drop and foot inversion due to paralysis of the muscles in the anterior and lateral compartments of the leg. This causes the patient to have an abnormal "steppage gait" and sensory loss on the front and sides of the leg and foot. Surgical treatment may involve rerouting the tibialis posterior muscle, which is innervated by the intact tibial nerve, to the dorsal foot to help correct deformities caused by common peroneal nerve injury.
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Similar to Applied anatomy common peroneal nerve injury
Applied anatomy common peroneal nerve injury
- 1. Dr.AkramJaffar Applied Anatomy ofNerve Injuries in the Lower LimbApplied Anatomy of Nerve Injuries in the Lower Limb Common peroneal nerveCommon peroneal nerve Akram Jaffar, Ph.D. Subscribe to Human Anatomy Education Channel https://www.youtube.com/user/akramjfr Human Anatomy Education platforms by Akram Jaffar Follow @AkramJaffar Like Human Anatomy Education Page https://www.facebook.com/AnatomyEducation
- 2. Dr.AkramJaffar References and suggestedreading • Ellis H (2006): Clinical anatomy, A revision and applied anatomy for clinical students. 11th Ed. Blackwell Publishing. Massachusetts • Moore KL & Dalley AF (2006): Clinically oriented anatomy. 5th ed. Lippincott Williams & Wilkins. Baltimore • Brust JCM (2007): Current Diagnosis & Treatment in Neurology. 2nd ed. McGraw-Hill Professional. • Hamdan FB, Jaffar AA, & Ossi RG (2008): The propensity of the common peroneal nerve in thigh level injuries. J Trauma. 64:300-303.
- 3. Dr.AkramJaffar Objectives After completion ofthis session, students should be able to discuss, identify, and describe: – The anatomical factors predisposing to nerve injuries. – The anatomy of deformity, weakness and sensory loss following the nerve injury. – The applied anatomy of clinical examination for specific nerves. – Surgical anatomy of treating nerve injuries.
- 4. Dr.AkramJaffar Common peroneal nerveinjury • Most commonly injured nerve in the lower limb because it winds superficially around the neck of the fibula. • Common causes of injury: – Fracture of the neck of the fibula. – Pressure exerted on the region of the head of the fibula by a tightly applied plaster cast or the sharp edge of the bed during sleep.
- 5. Dr.AkramJaffar Common peroneal nerveinjury Deformity • Foot drop • Foot inversion . Cause • Paralysis of muscles of the extensor and peroneal compartments. The weight of the foot causes it to be plantar flexed. • Paralysis of evertors: peroneus longus and brevis. The opposing invertor (tibialis posterior) is not affected (tibial n.) Peroneus longus & brevis Foot drop Tibialis post. Common peroneal n. Tibial n.
- 6. Dr.AkramJaffar Common peroneal nerveinjury Deformity • Abnormal gait (steppage gait): the patient raises the foot higher than usual and brings it down suddenly making a flapping noise since otherwise his toes drag and the tip of the shoe scratches the ground Cause • Paralysis of muscles of the extensor compartment. The weight of the foot causes it to be plantar flexed.
- 7. Dr.AkramJaffar Common peroneal nerveinjury Sensory loss • Anterior and lateral sides of the leg, dorsum of the foot, and toes including the medial side of the big toe Surgical treatment: • Rerouting tibialis posterior to the front. Tibialis posterior is supplied by the tibial nerve. ? Common peroneal nerve Superficial peroneal n deep peroneal n