It is performed by lightly tapping (percussing) over the nerve to elicit a sensation of tingling or 'pins and needles' in the distribution of the nerve ĭiagnosis Phalen's maneuver is a diagnostic test for carpal tunnel syndrome discovered by an American orthopedist named George S Phalen.
ĭiagnosis History Physical Examination: Tinel sign: is a way to detect irritated nerves. Inherited physical characteristics, such as the shape of your wrist, may make you more susceptible. Heredity: You may be significantly more likely to develop carpal tunnel syndrome if close relatives have had the condition. Thyroid conditions (hypothyroidism) Rheumatoid arthritis Diabetes mellitus Ĭauses Women are three times as likely as men are to develop carpal tunnel syndrome, according to the National Institute of Neurological Disorders and Stroke. Ĭauses Joint dislocations Fractures Osteoarthritis can narrow the tunnel Posture - keeping the wrist bent for long periods of time Repetitive wrist movements Ĭauses Fluid retention during pregnancy can cause swelling in the tunnel and symptoms of carpal tunnel syndrome, which often go away after delivery. Pressure on the nerve can happen several ways: swelling of the lining of the flexor tendons, called tenosynovitis. Symptoms Problems with fine finger movements (coordination) in one or both hands Wasting away of the muscle under the thumb (in advanced or long-term cases) Weak grip or difficulty carrying bags (a common complaint) Weakness in one or both hands Ĭauses Usually the cause is unknown. Symptoms Numbness or tingling in the thumb and next two or three fingers of one or both hands Numbness or tingling of the palm of the hand Pain extending to the elbow Pain in wrist or hand in one or both hands It can lead to numbness, tingling, weakness, or muscle damage in the hand and fingers. Ĭarpal Tunnel Syndrome Carpal tunnel syndrome is pressure on the median nerve - the nerve in the wrist that supplies feeling and movement to parts of the hand. The median nerve passes through the carpal tunnel to receive sensations from the thumb, index, and middle fingers of the hand. Īnatomy The tight space between this fibrous band and the wrist bone is called the carpal tunnel. Carpal Tunnel Syndrome Margarita Correa MD FAAPMR Physical Medicine and RehabilitationĪnatomy Carpus is a word derived from the Greek word 'karpos' which means 'wrist.' The wrist is surrounded by a band of fibrous tissue that normally functions as a support for the joint.
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