Background Accessory Deep Peroneal Nerve (ADPN) is an anatomic variation that can potentially cause disturbance in electrodiagnostic studies. This anomaly could be detected by nerve conduction studies. There are no recent updates about prevalence of this anatomic variation. Electrodiagnostic medicine clinic is the best environment for detecting presence and prevalence of this nerve, so present study enrolled.
Materials & Methods 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.
Results The study population included 120 females (52%) and 110 (47%) males with mean age of 42.1 ± 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.
Conclusion The prevalence of ADPN in this study was 12.2%, (17.9% bilateral and 82.1% unilateral).
*This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
5 Masakado Y. Clinical neurophysiology in the diagnosis of peroneal nerve palsy. The Keio Journal of Medicine 2008; 57 (2) 84-89 10.2302/kjm.57.84 18677088
11 Mathis S. Study of accessory deep peroneal nerve motor conduction in a population of healthy subjects. Neurophysiologie Clinique/Clinical Neurophysiology 2011; 214-215
12 Bhardwaj AK. Anatomic variations of superficial peroneal nerve: clinical implications of a cadaver study. Italian Journal of Anatomy and Embryology 2010; 115 (3) 223-228 21287977
14 Murad H, Neal P, Katirji B. Total innervation of the extensor digitorum brevis by the accessory deep peroneal nerve. European Journal of Neurology 1999; 6 (3) 371-373 10.1046/j.1468-1331.1999.630371.x 10210922
15 Kudoh H, Sakai T, Horiguchi M. The consistent presence of the human accessory deep peroneal nerve. Journal of anatomy 1999; 194 (1) 101-108 10.1046/j.1469-7580.1999.19410101.x 1467898 10227671
16 Hasegawa OMS, Wada N. innervation patterrn to the extensor digirtorum brevis by deep peroneal nerve and accessory deep peroneal nerve. No To Shinkei 2001; 53: 453-456 11424356
17 Marciniak C. Practice parameter: Utility of electrodiagnostic techniques in evaluating patients with suspected peroneal neuropathy: An evidence based review. Muscle & Nerve 2005; 31 (4) 520-527 10.1002/mus.20308 21739664
