KMID : 1140920210450040325
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Annals of Rehabilitation Medicine 2021 Volume.45 No. 4 p.325 ~ p.330
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Is Palmar Cutaneous Branch of the Median Nerve More Swollen in Carpal Tunnel Syndrome?
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Jeong Ha-Mok
Jeong Young-Ha Yoon Joon-Shik
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Abstract
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Objective: To investigate the characteristics of the palmar cutaneous branch of the median nerve (PCBMN) in patient with carpal tunnel syndrome (CTS) using high-resolution ultrasound.
Methods: Fourteen healthy volunteers (17 wrists) and 31 patients with CTS (41 wrists) were evaluated by high-resolution ultrasound. All patients were classified into three groups based on the electrophysiologic CTS impairment severity: mild, moderate, and severe. Using high-resolution ultrasound, the cross-sectional areas (CSAs) of the PCBMN were measured at the proximal wrist crease, bistyloid line, and distal wrist crease, and the largest CSA was defined as the maximal CSA.
Results: The maximal CSA of the PCBMN of the control, mild, moderate, and severe CTS groups were 0.27¡¾0.08, 0.30¡¾0.07, 0.35¡¾0.10, and 0.47¡¾0.13 mm2, respectively. The maximal CSA of the PCBMN was significantly larger in the severe CTS group than in the other groups.
Conclusion: The PCBMN could be concomitantly affected in patients with severe CTS.
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KEYWORD
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Palmar cutaneous branch, Median nerve, Carpal tunnel syndrome, Ultrasonography
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