Neural electrophysiological localization diagnosis on patients with common peroneal nerve injury in capitulum fibulae

Abstract

Objective To discuss the neural electrophysiological localization diagnosis on patients with common peroneal nerve injury in capitulum fibulae.Methods The conventional neural electrophysiological method:MNCV of common peroneal nerve,SNCV of superficial peroneal nerve,EMG of the muscles controlled hy common peroneal nerve.Special method:short segment stimulation method; to detect the clinically diagnosed 30 patient with connon peroneal nerve injury in capitulum fibulae.The method of short segment stimulation emphasize on both MNCV of superior and inferior part of capitulum fibulae to look for specific site ofthe injury.Results ①The 28 patients with the injury of common peroneal nerve showed reduction in MNCV of common peroneal nerve from inferior to superior part of the capitulum fibulae.②Short segment stimulation method of common peroneal nerve from inferior to superior part of the capitulum fibulae showed the most specific site of the lesion were ranged 2 ～ 6 cm between superior and inferior part of the capittlum fibulae.③Patients with common peroneal nerve injury in capitulum fibulae not all involve the EMG abnormity in anterior tibial muscle and extensor digitorum longus.Conclusions Short segment stimulation method shows higher loealization diagnostic value in patients with common peroneal nerve injury in capitulum fibulae and conventional abnormity in SNCV of superficial peroneal nerve and EMG is helpful in diagnosis. Key words: Common peroneal nerve injury; Conduction block; Short segment stimulation method; From inferior to superior part of the capitulum fibulae; Electromyography