Tountas C P, Bihrle D M, MacDonald C J, Bergman R A
Department of Family Medicine, University of Minnesota, Duluth.
J Hand Surg Am. 1987 Sep;12(5 Pt 1):708-12. doi: 10.1016/s0363-5023(87)80053-9.
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.
