title: Variations in the distal branches of the superficial fibular sensory nerve.
abstract: We evaluated anatomic variations of distal branches of the superficial fibular sensory nerve electrophysiologically.
  
  
  
  Orthodromic nerve conduction studies (NCS) of the first and third branches (M-I, M-III) of the medial dorsal cutaneous nerve and the fourth and fifth branches (I-IV, I-V) of the intermediate dorsal cutaneous nerve (IDCN) were performed. To find anomalous innervations from the dorsal sural nerve (DSN) in the IDCN territory, NCS of the fourth and fifth branches (S-IV, S-V) of the DSN were also performed.
  
  
  
  All sensory nerve action potentials (SNAPs) of M-I and M-III could be obtained bilaterally from 31 healthy Japanese volunteers. SNAPs of I-IV and I-V were recordable in 85.5% and 43.5% of feet, respectively. Anomalous innervations from the DSN were confirmed in 71.0% of S-IV and 93.5% of S-V.
  
  
  
  These results suggest that anatomical variations in the IDCN territory are very frequent in Japanese subjects. Muscle Nerve 55: 74-76, 2017.
authors.affiliation: Department of Neurology, Kawasaki Medical School, 577 Matsushima, Kurashiki, Okayama, Japan.
authors.forename: Shoji
authors.initials: S
authors.lastname: Hemmi
authors.affiliation: Department of Neurology, Kawasaki Medical School, 577 Matsushima, Kurashiki, Okayama, Japan.
authors.forename: Katsumi
authors.initials: K
authors.lastname: Kurokawa
authors.affiliation: Department of Neurology, Kawasaki Medical School, 577 Matsushima, Kurashiki, Okayama, Japan.
authors.forename: Taiji
authors.initials: T
authors.lastname: Nagai
authors.affiliation: Department of Neurology, Kawasaki Medical School, 577 Matsushima, Kurashiki, Okayama, Japan.
authors.forename: Ryutaro
authors.initials: R
authors.lastname: Kushida
authors.affiliation: Central Laboratory, Kawasaki Medical School, 577 Matsushima, Kurashiki, Okayama, Japan.
authors.forename: Toshio
authors.initials: T
authors.lastname: Okamoto
authors.affiliation: Department of Neurology, Kawasaki Medical School, 577 Matsushima, Kurashiki, Okayama, Japan.
authors.forename: Tatsufumi
authors.initials: T
authors.lastname: Murakami
authors.affiliation: Department of Neurology, Kawasaki Medical School, 577 Matsushima, Kurashiki, Okayama, Japan.
authors.forename: Yoshihide
authors.initials: Y
authors.lastname: Sunada
mesh_terms: D000200:Action Potentials / Q000502:physiology*; D000328:Adult; D005260:Female; D064368:Healthy Volunteers; D006801:Humans; D008297:Male; D008875:Middle Aged; D009431:Neural Conduction / Q000502:physiology*; D010543:Peroneal Nerve / Q000033:anatomy & histology / Q000502:physiology*; D013497:Sural Nerve / Q000033:anatomy & histology / Q000502:physiology*; D055815:Young Adult
keywords: dorsal sural nerve; intermediate dorsal cutaneous nerve; medial dorsal cutaneous nerve; sensory nerve action potential; superficial fibular sensory nerve