الفهرس 
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Abstract
Carpal tunnel syndrome (CTS) is one of the most common upper limb compression neuropathies. CTS account for approximately 90% of all entrapment neuropathies. It is due to an entrapment of the median nerve in the carpal tunnel at the wrist.It is one of the most widely recognized occupational health conditions; particularly in manual workers. Carpal tunnel syndrome has an indistinct, multifactorial etiology: often a single cause cannot be identified. A variety of contributing etiological factors and conditions can affect the median nerve in the carpal tunnel.Clinical examination is considered the gold standard for diagnosis of CTS. Although several tests have been described to help in diagnosis of CTS, none of these tests are diagnostic on their own. Most of the tests are complementary to each other rather than diagnostic of CTS. The most widely used tests are Tinel’s sign, Phalen’s sign.Nerve conduction studies are sensitive and widely accepted method in detecting axonal damage and degree of nerve demyelination but in it is thought that when electrophysiological studies are normal in the presence of clinical signs, this indicates that the disease is in the mild form so there is still a debate as regard the role of nerve conduction studies in mild form of CTS.