Definition: 'Hyperabduction Syndrome'
hyperabduction syndromeType: Term
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.
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