J Korean Assoc EMG Electrodiagn Med Search


J Korean Assoc EMG Electrodiagn Med 1999;1(2):189-195.
Published online May 9, 1999.
The Electrodiagnosis of Accessory Deep Peroneal Nerve among 138 Koreans
Objective : To investigate the incidence and the electrodiagnostic characteristics of the accessory deep peroneal nerve. Method : In this study, 138 neurologically healthy subjects were examined for the presence of accessory deep peroneal nerve bilaterally. This anatomical variation was proved by stimulating at the ankle, at the fibular head, and posterior to the lateral malleolus. If the accessory deep peroneal nerve was present, it was confirmed by concentric needle electrode from EDB muscle. Results : The accessory deep peroneal nerve was detected in 28 of 138 individuals and in 36 of 276 examined legs with bilateral 8 subjects. The incidence of the accessory deep peroneal nerve was not significantly different according to the sex and the laterality of their lower extremities. In two subjects, volume conduction was detected from the deep peroneal nerve depolarization. Conclusion : This anatomical variation should be suspected when the amplitude of the CMAP of EDB is considerably smaller when stimulating the deep peroneal nerve compared with stimulating the common peroneal nerve.
Key Words: Electrodiagnostic characteristics, Accessory deep peroneal nerve, Extensor digitorum brevis
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