Etiology and pathology.
Until the 1920s, TOS was believed to be a vascular condition caused by compression of the subclavian artery by a congenital anomaly, either a cervical rib or tight anterior scalen muscle. Today it is regarded primarily as a neurologic condition caused by neck trauma injuring and scarring the scalene muscles.
Sanders
Richard J
RJ
University of Colorado Health Sciences Center, 4200 E. Ninth Avenue, Denver, CO 80246, USA. rsanders@ecentral.com
Hammond
Sharon L
SL
D000013:Congenital Abnormalities / Q000503:physiopathology; D012090:Cumulative Trauma Disorders / Q000150:complications; D006801:Humans; D011187:Posture / Q000502:physiology; D013901:Thoracic Outlet Syndrome / Q000209:etiology* / Q000473:pathology* / Q000503:physiopathology; D014947:Wounds and Injuries / Q000150:complications