High‐Resolution Ultrasound Imaging of Axillary Nerve and Relevant Injury

Author:

Fu Shuai1,Xue Guoyan2,Jiang Ling1,Xue Heng1ORCID,Cui Ligang1ORCID

Affiliation:

1. Department of Ultrasound Peking University Third Hospital, Peking University Beijing China

2. Department of Ultrasound Yuncheng Central Hospital Yuncheng China

Abstract

ObjectiveTo evaluate the feasibility of axillary nerve (AN) visualization in healthy volunteers and the diagnostic value of AN injury via high‐resolution ultrasonography (HRUS).MethodsAN was examined by HRUS on both sides of 48 healthy volunteers and oriented the transducer according to three anatomical landmarks: quadrilateral space, anterior to subscapular muscle, and posterior to axillary artery. The maximum short‐axis diameter (SD) and cross‐sectional area (CSA) of AN were measured at different levels, and AN visibility was graded by using a five‐point scale. The patients suspected of having AN injury were assessed by HRUS, and the HRUS features of AN injury were observed.ResultsAN can be visualized on both sides in all volunteers. There was no significant difference in SD and CSA of AN at the three levels between the left and right sides or in SD between males and females. However, the CSA of males at different levels was slightly larger than those of females (P < .05). In most volunteers, AN visibility at different levels was excellent or good, and AN was best displayed anterior to subscapular muscle. Rank correlation analysis revealed that the degree of AN visibility had correlation with height, weight, and BMI. A total of 15 patients diagnosed with AN injury, 12 patients showed diffuse swelling or focal thickening in AN, and 3 patients showed AN discontinuity.ConclusionHRUS is able to reliably visualize AN, and it could be considered as the first choice for diagnosing AN injury.

Publisher

Wiley

Subject

Radiology, Nuclear Medicine and imaging,Radiological and Ultrasound Technology

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