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true neurologic thoracic outlet syndrome


Definition: very chronic axon loss brachial plexopathy, caused by compromise of the distal C8 anterior primary ramus or proximal lower trunk fibers by a congenital band extending from a rudimentary cervical rib to the first thoracic rib; rare disorder, found mostly in young to middle-aged women, which presents with unilateral hand wasting and weakness, particularly involving the lateral thenar eminence; sometimes accompanied by intermittent discomfort along the medial forearm and hand.

Synonym(s): cervical rib and band syndrome, classic neurologic cervical rib syndrome

Further information

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© Copyright 2018 Wolters Kluwer. All Rights Reserved. Review date: Sep 19, 2016.