Thoracic Outlet Syndrome (TOS), Arm Up

Thoracic outlet syndrome, a nonspecific diagnosis representing many conditions that involve the neurovascular structures that pass through the thoracic outlet. Compression of this area causes a constellation of symptoms, which can include upper extremity pallor, paresthesia, weakness, muscle atrophy, and pain, and manifests when pressure in the thoracic outlet increase to the point of impinging vessels or nerves. Surgical intervention for TOS is indicated for patients who have failed conservative management.