title: Carpal tunnel syndrome: role of carpal canal size.
abstract: Carpal canal size was examined as a risk factor associated with carpal tunnel syndrome in the workplace. Seven of 14 electricians had symptomatic carpal tunnel syndrome. On measuring cross-sectional areas by CT, affected workers had a cross-sectional area of 1.75 +/- 0.21 cm2; control values were 2.53 +/- 0.15 cm2 (p less than 0.05). Individuals with a subclinical syndrome had an area of 1.83 +/- 0.22 cm2, similar to the symptomatic group. Wrist circumference was not a predictor of smallest carpal canal area. Unusual bony and soft tissue structures within the carpal canal were easily identified with CT.
mesh_terms: D000328:Adult; D002348:Carpal Bones / Q000000981:diagnostic imaging; D002349:Carpal Tunnel Syndrome / Q000000981:diagnostic imaging*; D006801:Humans; D008297:Male; D008875:Middle Aged; D009784:Occupational Diseases / Q000000981:diagnostic imaging; D014057:Tomography, X-Ray Computed