In 25 forestry workers (20%) clinical CTS was diagnosed. Of these men, 12 (48%) had bilateral CTS. Right sided CTS were found in 10 men and left sided in three. Nevertheless, the CTS of the right hand, in general based on conduction velocities in the median nerve, was milder than in the left hand. Of the 22 men with right sided CTS, 20 were classified as mild cases and two as moderate. Of the 15 subjects with left sided CTS, 10 were classified as mild, three as moderate, and two as severe. Table 2 shows conduction velocities and distal latencies (mean and SD) for the median and ulnar nerves in the CTS and no CTS groups. Numbness correlated with sensory NCV of the median nerve . Exposure time correlated with motor NCV in the left ulnar nerve but not the right In subjects with CTS we found a correlation with VWF and sensory NCV in both median nerves (right: r=0.598, . CTS correlated significantly with the increase of the vibrotactile threshold in the left hand