• Miao Shi, Hengtao Qi, Hongyu Ding, Feng Chen, Zhaoqin Xin, Qinghua Zhao, Shibing Guan, and Hao Shi.
• Department of Ultrasound, Qianfoshan Hospital Affiliated to Shandong University, Jinan Department of Ultrasound, Liaocheng People's Hospital, Taishan Medical University, Shandong Department of Ultrasound, Shandong Medical Imaging Research Institute, Shandong University, Jinan EMG Laboratory, Liaocheng People's Hospital Hand Surgery of Provincial Hospital Affiliated to Shandong University, Jinan Department of Radiology, Qianfoshan Hospital Affiliated to Shandong University, Jinan, China.
• Medicine (Baltimore). 2018 Jan 1; 97 (2): e9587e9587.

AbstractThis study aims to evaluate the value of electrophysiological examination and high frequency ultrasonography in the differential diagnosis of radial nerve torsion and radial nerve compression.Patients with radial nerve torsion (n = 14) and radial nerve compression (n = 14) were enrolled. The results of neurophysiological and high frequency ultrasonography were compared.Electrophysiological examination and high-frequency ultrasonography had a high diagnostic rate for both diseases with consistent results. Of the 28 patients, 23 were positive for electrophysiological examination, showing decreased amplitude and decreased conduction velocity of radial nerve; however, electrophysiological examination cannot distinguish torsion from compression. A total of 27 cases showed positive in ultrasound examinations among all 28 cases. On ultrasound images, the nerve was thinned at torsion site whereas thickened at the distal ends of torsion. The diameter and cross-sectional area of torsion or compression determined the nerve damage, and ultrasound could locate the nerve injury site and measure the length of the nerve.Electrophysiological examination and high-frequency ultrasonography can diagnose radial neuropathy, with electrophysiological examination reflecting the neurological function, and high-frequency ultrasound differentiating nerve torsion from compression.Copyright © 2017 The Authors. Published by Wolters Kluwer Health, Inc. All rights reserved.

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