title: Nerve conduction study of the superficial peroneal sensory distal branches in koreans.
abstract: OBJECTIVE
  To perform nerve conduction studies of the four branches of the superficial peroneal nerves to determine normal values and anatomic variations in Koreans.
  
  
  METHODS
  Antidromic sensory nerve conduction studies of the four distal branches were performed on 70 healthy subjects (100 feet). We applied electrical stimulation at the midpoint of medial and lateral malleoli for the medial dorsal cutaneous nerve (MDCN), and at the lateral 1/4 point between the medial and lateral malleoli for the 2 branches of the intermediate dorsal cutaneous nerve (IDCN).
  
  
  RESULTS
  Reference values (mean±SD) of the onset/ peak latency (ms)/ sensory action potential amplitude (µV) for the two branches of the MDCN and for the first branch of the IDCN were 2.2±0.3/2.9±0.3/9.2±3.1, 2.2±0.3/2.8±0.3/9.1±3.0 and 2.3±0.4/2.9±0.3/8.5±2.8, respectively. For the second IDCN branch, the reference values were 2.3±0.4/3.0±0.4/7.1±2.6 but anomalous sural innervation was also found. Three types of IDCN innervations to the fourth interdigital web space were detected. In type I, the fourth interdigital webspace was innervated solely by the IDCN, whereas in type II, it was innervated by both the IDCN and distal sural nerve. In type III, it was solely innervated by the distal sural nerve.
  
  
  CONCLUSIONS
  The results of this study show the reference values of the distal sensory branches of the superficial peroneal nerve, and provide information on the variant innervations to the fourth interdigital web space.
authors.affiliation: Department of Rehabilitation Medicine, College of Medicine, The Catholic University of Korea, Bucheon 420-717, Korea.
authors.forename: Yeong-A
authors.initials: YA
authors.lastname: Ko
authors.forename: Young Jin
authors.initials: YJ
authors.lastname: Ko
authors.forename: Hye Won
authors.initials: HW
authors.lastname: Kim
authors.forename: Seong Hoon
authors.initials: SH
authors.lastname: Lim
authors.forename: Byung Woo
authors.initials: BW
authors.lastname: Yang
authors.forename: Sung-Hee
authors.initials: SH
authors.lastname: Jung
authors.forename: Sun
authors.initials: S
authors.lastname: Im