RESUMEN
This is a prospective study of 50 patients of suspected neurogneic thoracic outlet syndrome [TOS] who were referred to Armed Forces Institute of Rehabilitation Medicine [AFIRM], Rawalpindi. In this article we have presented our 2 years experience [Jul 1998 to Jun 2000] of clinical evaluation and electrophysiological studies of patients between 14 -75 years of age [mean age 39.72]. Nerve conduction studies [NCS] were performed on MS6 system [MEDELEC] and needle electromyography [NEMG] was performed with NEUROPACK electromyography model MEM -7102 K. Final diagnosis made on electrophysiological studies showed 30 cases of TOS, CTS, ulnar tardy syndorme, ulnar compression at canal of Guyon, C8 radiculopathy and normal study. TOS was twice more common in women. It most commonly affected patients in the 3'd and 4"' decade. Most frequent symptoms were pain, paraesthesia and weakness of hand muscles. Roos test was positive in 92% patients. Electrophysiological studies are very useful to confirm the diagnosis, rule out other entrapment neuropathies and decide the mode of treatment in neurogenic TOS