WEBVTT 00:00:00.000 --> 00:00:01.859 (English captions by Andrea Matsumoto from the University of Michigan) 00:00:02.690 --> 00:00:07.860 To perform the Roos' Test abduct the shoulders to 90 degrees, flex the elbows to 90 degrees, and 00:00:07.860 --> 00:00:10.940 rapidly open and close hands for up to 3 minutes. 00:00:10.940 --> 00:00:14.970 If the patient has reproduction of pain or numbness, consider thoracic outlet syndrome.