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AB1003 Median and ulnar nerve cross-sectional area in carpal tunnel syndrome with extraterritorial spread of sensory symptoms
  1. B Mansiz Kaplan1,
  2. M Akdeniz Leblebicier2,
  3. I Yagci3
  1. 1Department of Physical Medicine and Rehabilitation, University of Health Sciences, Ankara Training and Research Hospital, Ankara
  2. 2Department of Physical Medicine and Rehabilitation, Gumushane State Hospital, Gumushane
  3. 3Department of Physical Medicine and Rehabilitation, School of Medicine, Marmara University, Training and Research Hospital, Istanbul, Turkey


Objectives To evaluate the relationship between extramedian spreading of sensorial symptoms and median and ulnar nerve cross-sectional area in patient with carpal tunnel syndrome (CTS), to compare the ultrasonographic and electrophysiological findings in patients with CTS whose sensorial symptoms are extramedian spreading or median distribution only.

Methods Patients with CTS were divided into two groups as with and without extramedian symptoms and were assessed clinically, electrophysiologically and ultrasonographically by three blind investigators. In electrophysiological tests, median and ulnar nerve conduction studies were performed. Nerve cross-sectional areas were measured at hamatum hook, psiform bone, radio-ulnar joint, one-third distal part of forearm, and medial epicondyle for median nerve; radio-ulnar joint, psiform bone, one-third distal part of forearm, and medial epicondyle for ulnar nerve by ultrasonography.

Results The study was completed with 61 patients (108 hands). Extramedian symptoms were present in 31 patients (54 hands). Finger grip strength was lower, pain values evaluated with visual analogue scale were higher in these patients (p<0.05). There was no statistically significant difference in electrophysiological and ultrasonographic parameters between two groups.

Conclusions These results suggest that extramedian spread in CTS patients is more related to central and peripheral sensitization than peripheral causes.

Disclosure of Interest None declared

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