hyperabduction syndrome

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Related to hyperabduction syndrome: thoracic outlet syndrome, Costoclavicular syndrome

hy·per·ab·duc·tion syn·drome

1. diminution or loss of distal upper extremity pulses on hyperabduction of the limb;
2. one of the forerunners of thoracic outlet syndrome, attributed to compression of the subclavian or axillary artery, or the brachial plexus, either in the costoclavicular space or beneath the pectoralis minor tendon, during hyperabduction of the upper limb.

tho·rac·ic out·let syn·drome

(TOS) (thōr-as'ik owt'lĕt sin'drōm)
Collective name for several conditions attributed to compromise of blood vessels or nerve fibers (brachial plexus) at any point between the base of the neck and the axilla; classified on the basis of the structure known or presumed to be compromised, and divided into two main groups: vascular and neurologic.
Synonym(s): costoclavicular syndrome, hyperabduction syndrome, thoracic outlet compression syndrome, Wright syndrome.