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  • Title: Reduced sensory nerve conduction velocity of the distal part of the radial nerve among patients with vibration syndrome.
    Author: Hirata M, Sakakibara H, Abe M.
    Journal: Electromyogr Clin Neurophysiol; 2002 Mar; 42(2):113-8. PubMed ID: 11938593.
    Abstract:
    The present study was aimed at clarifying the effects of vibration syndrome (VS) on the distal part of the radial nerve, which is rarely affected by chronic entrapment. Thirty-one patients with VS due to previous exposure to vibration and 18 age-matched controls were examined for sensory nerve conduction velocities in the distal part of the radial nerve (SCV-DR) in the dorsal side of the hand. The patient group was divided into two subgroups, one of those with vibration-induced white finger (VWF) in the thumb or index finger where sensory nerves are innervated by the radial nerve (N = 21) and the other without VWF (N = 10). SCV-DR among the patients was significantly slower than in the controls (t = 3.55, p = 0.00138). The ANOVA of SCV-DR for the three groups showed F2, 46 = 5.25 (p = 0.0088). A significant difference was found between the controls and the VWF (+) group (p = 0.0233), but not between the controls and the VWF (-) group (p = 0.478) by multiple comparison using Scheffe's method. These findings suggest that VS affects the radial nerve with a direct vibration effect and/or a co-operative effect with direct circulatory disturbance manifested by VWF.
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