title: Ultrasonographic cross-sectional area normal values of the ulnar nerve along its course in the arm with electrophysiological correlations in 100 Asian subjects.
abstract: BACKGROUND
  Normative cross-sectional areas (CSAs) have been obtained for the Western population. We obtained CSAs of normal ulnar nerves at predetermined sites and correlate them with electrophysiological variables in Asian subjects.
  
  
  METHODS
  One hundred healthy volunteers, mean age 39 ± 14 years (range, 18-75 years), were recruited for the study after obtaining informed consent. The ulnar nerve was examined ultrasonographically from wrist to axilla, and CSA was measured at predetermined sites. All subjects underwent a simultaneous standardized nerve conduction study.
  
  
  RESULTS
  Men had larger CSAs, and CSAs increased with advancing age. There was a statistically significant correlation between CSA at the wrist and distal ulnar motor latency (P = 0.005).
  
  
  CONCLUSIONS
  Ulnar CSA correlated with age, gender, and distal motor latency. No correlations were observed with height, weight, or body mass index.
authors: Department of Neurology, Narayana medical college and hospital, Nellore, Andhra Pradesh 524002, India. lokeshbdvt@yahoo.co.in
authors: Lokesh
authors: L
authors: Bathala
authors: Pavan
authors: P
authors: Kumar
authors: Krishna
authors: K
authors: Kumar
authors: Leo H
authors: LH
authors: Visser
mesh_terms: D000293:Adolescent; D000328:Adult; D000367:Age Factors; D000368:Aged; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009431:Neural Conduction / Q000502:physiology*; D012016:Reference Values; D014459:Ulnar Nerve / Q000000981:diagnostic imaging* / Q000502:physiology; D014463:Ultrasonography; D014953:Wrist / Q000294:innervation*