Page "Thoracic outlet syndrome" Paragraph 21

Additional maneuvers that may be abnormal in TOS include the " stick em up hand raise " for up to 3 – 5 minutes, which involves holding both hands at right angles over the head bent at the elbows, with or without opening and closing of the fingers ( a positive test occurs when the affected hand quickly becomes paler than the unaffected because of compromised blood supply ), and the " compression test ", when exerting pressure between the clavicle and medial humeral head causes radiation of pain and / or numbness into the affected arm.