Peripheral nerve conduction in patients with a cervical rib and band

Citations Over TimeTop 11% of 1978 papers

Abstract

In 14 patients with wasting of the hand due to a cervical rib and band, motor and sensory conduction studies on the peripheral parts of the median and ulnar nerves were helpful in establishing the correct diagnosis. The median nerve findings excluded carpal tunnel syndrome even when the clinical pattern of wasting in the hand suggested this diagnosis. Preservation of conduction velocity in the ulnar nerve excluded ulnar entrapment at the elbow; the reduced amplitude of the ulnar sensory action potentials (SAPs) indicated that the lesion was distal to the dorsal root ganglia. In 3 patients with ulnar SAP amplitudes that were low but not clearly abnormal, the level of the lesion was confirmed by a reduced response to intradermal injection of histamine on the inner side of the forearm.

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