Variations of the median nerve in the carpal canal.
Eight hundred twenty-one median nerves were retrospectively and prospectively reviewed for variations during operations to treat carpal tunnel syndrome. Ninety-two cadaver median nerves were also dissected to document the incidence of variations within the carpal canal. The combined incidence of anomalies at operation (Lanz groups 1 to 4) was 9.8% and in the cadaver series 18%. The discrepancy reported by Poisel, 54% in the Lanz group 1 series, versus ours of 1.42% cannot be explained.
Tountas
C P
CP
Department of Family Medicine, University of Minnesota, Duluth.
Bihrle
D M
DM
MacDonald
C J
CJ
Bergman
R A
RA
D002349:Carpal Tunnel Syndrome / Q000601:surgery*; D006801:Humans; D008475:Median Nerve / Q000002:abnormalities / Q000033:anatomy & histology*; D011446:Prospective Studies; D012189:Retrospective Studies