Reference values for nerve ultrasonography in the upper extremity

Authors

  • Sun Jae Won MD,

    1. Department of Rehabilitation Medicine, Yeouido St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, South Korea
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  • Byung-Jo Kim MD, PhD,

    1. Department of Neurology, Korea University College of Medicine, Seoul, South Korea
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  • Kyung Seok Park MD, PhD,

    1. Department of Neurology, Seoul National University Bundang Hospital, Seoul National University, College of Medicine, Seoul, South Korea
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  • Joon Shik Yoon MD, PhD,

    Corresponding author
    1. Department of Rehabilitation Medicine, Korea University College of Medicine, Seoul, South Korea
    • Department of Rehabilitation Medicine, Yeouido St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, South Korea
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  • Hyuk Choi PhD

    1. Department of Medical Sciences, Graduate School of Medicine, Korea University, Seoul, South Korea
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J.S. Yoon;. E-mail: rehab46@korea.ac.kr

Abstract

Introduction

The aims of this study were to identify factors affecting the measurement of nerve cross-sectional area (CSA) and to establish normal reference values for nerve ultrasonography of the upper extremity.

Methods

Ninety-seven age-matched, healthy individuals were enrolled. Ultrasonographic tests were performed by tracing nerves from the axilla to the distal arm. CSA was measured at the following locations: median nerve (carpal tunnel inlet, forearm, antecubital fossa, midhumerus); ulnar nerve (wrist, 2 cm proximal to the wrist, forearm, cubital tunnel outlet and inlet, midhumerus); radial nerve (spiral groove, antecubital fossa); and musculocutaneous nerve (proximal humerus).

Results

The CSA reference values differed between the measured points along the path of each nerve. Nerve CSA correlated significantly with weight, body mass index, height, and gender; however, the CSA ratio (distal/proximal) did not correlate with demographic factors.

Conclusions

The normal reference values may be helpful in diagnosis of pathologies involving these nerves. Muscle Nerve 47: 864–871, 2013

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