title: Rapid ultrasonographic diagnosis of radial entrapment neuropathy at the spiral groove.
abstract: BACKGROUND
  Entrapment neuropathy of the radial nerve at the spiral groove region is relatively common. However, its localization may be technically challenging.
  
  
  OBJECTIVE
  To evaluate the use of ultrasound (US), in relation to electrophysiological testing, for this purpose.
  
  
  METHODS
  We studied 32 normal controls to obtain US parameters of the radial nerve. In addition, 10 patients with suspected radial neuropathy were tested using US and electrophysiological techniques.
  
  
  RESULTS
  US examination correctly identified all 6 patients with radial neuropathy. The other 4 patients with alternate diagnoses did not show US abnormalities exceeding that of normal controls. US examination required a significantly shorter time than electrophysiological testing.
  
  
  CONCLUSIONS
  US is of value as a rapid diagnostic adjunct for the localization of radial nerve entrapment.
authors.affiliation: Department of Neurology, National Neuroscience Institute, Singapore General Hospital, Outram Road, Singapore 169608, Singapore. lo.yew.long@sgh.com.sg
authors.forename: Y L
authors.initials: YL
authors.lastname: Lo
authors.forename: S
authors.initials: S
authors.lastname: Fook-Chong
authors.forename: T H
authors.initials: TH
authors.lastname: Leoh
authors.forename: Y F
authors.initials: YF
authors.lastname: Dan
authors.forename: Y E
authors.initials: YE
authors.lastname: Tan
authors.forename: M P
authors.initials: MP
authors.lastname: Lee
authors.forename: H Y
authors.initials: HY
authors.lastname: Gan
authors.forename: L L
authors.initials: LL
authors.lastname: Chan
mesh_terms: D000200:Action Potentials / Q000502:physiology / Q000528:radiation effects; D000328:Adult; D000367:Age Factors; D000368:Aged; D004558:Electric Stimulation; D004576:Electromyography / Q000379:methods; D005260:Female; D007839:Functional Laterality; D006801:Humans; D008297:Male; D008875:Middle Aged; D009408:Nerve Compression Syndromes / Q000000981:diagnostic imaging* / Q000473:pathology* / Q000503:physiopathology; D009431:Neural Conduction / Q000502:physiology; D011826:Radial Nerve / Q000503:physiopathology* / Q000528:radiation effects; D014463:Ultrasonography