%0 Journal Article
%T Prevalence of accessory deep peroneal nerve in referred patients to an electrodiagnostic medicine clinic
%A Seyed Rayegani
%A Elham Daneshtalab
%A Mohamad Bahrami
%A Dariush Eliaspour
%A Seyed Raeissadat
%A Sajjad Rezaei
%A Marzieh Babaee
%J Journal of Brachial Plexus and Peripheral Nerve Injury
%D 2011
%I Thieme Medical Publishers
%R 10.1186/1749-7221-6-3
%X In this cross sectional descriptive study that take place from March 2009 to July 2010, 230 cases comprising 460 legs referred for electrodiagnostic studies of upper limbs problems participated in the study. Compound muscle action potential (CMAP) and Nerve conduction Velocity (NCV) of Deep Peroneal Nerve (DPN) were measured by using EMG machine by stimulating DPN at knee, ankle and lateral malleolous areas accordingly, with recording from extensor digitorum brevis muscle. Results were analyzed and conclusion made.The study population included 120 females (52%) and 110 (47%) males with mean age of 42.1 ¡À 13.5 years. ADPN was detected in 28 patients (12%). Among them,10(17.9%) had bilateral ADPN and in remained 18 cases (82.1%) APN was unilateral. In 8 patients there was no recorded CMAP from EDB by proximal and distal stimulation implying EDB agenesis. Gender distribution was similar which means half of the cases (14 patients) belonged to each gender.The prevalence of ADPN in this study was 12.2%, (17.9% bilateral and 82.1% unilateral).Accessory Deep Peroneal Nerve (ADPN) is an anatomic variation which can potentially disturb electrodaignostic studies [1,2]. This nerve is separated from Superficial Peroneal Nerve (SPN) and then turns around lateral malleolus to innervate all or part of Extensor Digitorum Brevis(EDB)[3,4] (figure 1).If this anomaly exists among patients with peroneal nerve lesion, atypical presentations could be seen in their electrodiagnostic study (EDX) [5]. In case of Deep Peronel Nerve (DPN) lesion, denervation in all of DPN innervated muscles could be seen except for EDB [2,4]. In case of Superficial Peroneal Nerve (SPN) lesion at distal part of leg there is only impaired sensory SPN response, however in case of APN variation, denervation of EDB is also present. In addition, lesions in proximal part of SPN causes usually denervation in peroneus longus and peroneus brevis muscles plus finding of impaired sensory response of SPN. In case of APN th
%U http://www.jbppni.com/content/6/1/3