Dynamic Ultrasound for Carpal Tunnel Syndrome Caused by Squeezed Median Nerve Between the Flexor Pollicis Longus and Flexor Digitorum Tendons
Chen‐Yu Hung, King Hei Stanley Lam, Yung‐Tsan Wu
Abstract
Dear Editor, A 44-year-old male right-handed maxillofacial oral surgeon visited our clinic for the complaint of a 6-month history of numbness over his right thumb, index and middle fingers, and the radial side of the ringer finger, and weakness of his right thumb while performing surgery. These symptoms would be aggravated when he held the surgical instruments tightly and could be temporarily relieved by shaking his right hand. There was also occasional numbness of those involved fingers during the night, and he would wake up feeling the fingers were stiff and swollen. He denied pain over the neck, right shoulder, and right arm/forearm. The electrodiagnostic study results were within normal limits. The essential blood test results were also normal. Under the clinical diagnosis of carpal tunnel syndrome (CTS), he received oral medication treatment including prednisolone and nonsteroid anti-inflammatory drugs and three courses of physical therapy, but these treatments failed to improve his symptoms.