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Carpal tunnel syndrome (CTS) is a nerve compression syndrome associated with the collected signs and symptoms of compression of the median nerve at the carpal tunnel in the wrist. Carpal tunnel syndrome usually has no known cause, but there are environmental and medical risk factors associated with the condition. [1] [6] CTS can affect both wrists.
It can also cause swelling and a cold feeling, along with the urge to “shake out” your hand or wrist when you wake up, per NIAMS. ... Scientists don’t know exactly what causes carpal tunnel ...
In the human body, the carpal tunnel or carpal canal is a flattened body cavity on the flexor (palmar/volar) side of the wrist, bounded by the carpal bones and flexor retinaculum. It forms the passageway that transmits the median nerve and the tendons of the extrinsic flexor muscles of the hand from the forearm to the hand . [ 1 ]
Carpal tunnel syndrome is the name for a collection of symptoms that happen when a major nerve in your hand is squeezed as it travels through your wrist. Carpal Tunnel Syndrome: What to Know About ...
Previously, physicians thought repetitive wrist and hand motions were the only cause of carpal tunnel syndrome, especially in frequent computer users. But now doctors understand that the syndrome is probably a congenital predisposition in that some individuals have bigger carpal tunnels as compared to others. [ 30 ]
Indication of the site of the problem in carpal tunnel syndrome. In carpal tunnel syndrome, one of the tendons or tissues in the carpal tunnel is inflamed, swollen, or fibrotic and puts pressure on the other structures in the tunnel, including the median nerve. Carpal tunnel syndrome is the most commonly reported nerve entrapment syndrome. [2]
The opponens pollicis causes the thumb to flex and rotate medially, leaving the thumb unable to oppose. Carpal tunnel syndrome can result in thenar muscle paralysis which can then lead to ape hand deformity if left untreated. [11] Ape hand deformity can also be seen in the hand of benediction deformity. [citation needed]
The hallmark symptom of carpal tunnel syndrome is tingling (paresthesia), which is not commonly associated with pain. [2] Ulnar nerve entrapment at Guyon's canal causes weakness in specific muscles, but is not typically painful. [2]
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