Is Palmar Cutaneous Branch of the Median Nerve More Swollen in Carpal Tunnel Syndrome?
- Author:
Ha Mok JEONG
1
;
Young Ha JEONG
;
Joon Shik YOON
Author Information
- Publication Type:Original Article
- From:Annals of Rehabilitation Medicine 2021;45(4):325-330
- CountryRepublic of Korea
- Language:English
-
Abstract:
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±0.08, 0.30±0.07, 0.35±0.10, and 0.47±0.13 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.
