I don't recall if this has been posted before or not-

Thoracic Outlet Syndrome PART I: A clinical review
Journal of the American Chiropractic Association, Jan 2004 by McKenzie, Kim, Lin, Gene, Tamir, Shai

Abstract: Thoracic outlet syndromes (TOS) describe a group of disorders that refer to compression of the brachial plexus or the subclavian vessels as they pass through the thoracic outlet. Ninety percent of TOS patient complaints are neurological in nature.These syndromes can be named according to the location of compression or the cause of symptoms. Many factors predispose patients to the development of TOS, such as occupation, gender, medical conditions, and genetic anomalies. Diagnosis is largely based on the history and physical examination findings. Most patients respond well to conservative care, but success in conservative management depends on an accurate assessment and development of a treatment plan specific to the patient's needs.

http://findarticles.com/p/articles/m..._n9386854/pg_1