WHAT YOU SHOULD KNOW
Pronator syndrome is compression of the median nerve by the forearm muscles. This is the same nerve as in carpal tunnel syndrome. The difference besides location is that with muscular compression of the nerve is an on and off phenomenon occurring with use of the forearm muscles for powerful gripping and especially twisting activities.
Patients complain of a deep ache in the forearm with radiation down towards the wrist and hand. Numbness and tingling can occur in the thumb, index, long, and ring fingers. Patients often feel weak, and symptoms are made worse with forceful gripping and twisting.
Compression added over the forearm muscles by the examiner or forceful contraction of the muscles may reproduce pain, numbness, or tingling. The doctor will test the functions of the nerve for strength and feeling ability.
ADDITIONAL TESTS: None are needed. Electrical nerve tests will routinely be normal in this form of muscular nerve compression as opposed to carpal tunnel and cubital tunnel syndromes.
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