Abstract
Objective To analyze the pathogenesis,treatment and prognosis of the conmon peroneal nerve compression by cyst arising from the proximal tibiofibular joint.Methods Nine cases of common peroneal nerve compression treated from June 2008 to December 2010 were analyzed.The cause of neuropathy was compression by cystic fluid arising from the proximal tibiofibular joint.Results There were 6 cases of extraneural cyst.Cyst excision and neurolysis of the common peroneal nerve was carried out.Dorsiflexion muscles of the ankle and toe extensors recovered MRC 4 to 5 strength.The average recovery time was 3.5 months.Three eases were diagnosed as intraneural cyst.The same operation was done.Muscle power of ankle dorsiflexors and toe extensors reached MRC 3 to 4 strength and the average recovery time was 7 months.There was no recurrence.Condusion Extrusion of joint fluid from the proximal tibiofibular joint can form extra-or intraneural cysts causing compression of the common peroneal nerve.The prognosis of intraneural cysts is worse than that of extraneural cysts.The sooner the diagnosis and surgical treatment,the better the functional recovery. Key words: Cysts; Peroneal nerve; Proximal tibiofibular joint
Published Version
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