Fascicular constrictions above elbow typify anterior interosseous nerve syndrome. Academic Article uri icon

Overview

abstract

  • INTRODUCTION: In this study we tested the hypothesis that fascicular constrictions (FCs) of the median nerve proximal to the elbow joint characterize anterior interosseous nerve syndrome (AINS). METHODS: Magnetic resonance neurography (MRN) and ultrasound (US) examinations were evaluated in 45 patients with clinically suspected AINS. All 22 patients at site 1 underwent MRN and 8 underwent US; all 23 patients at site 2 underwent US. RESULTS: Median nerve FCs were identified in all MRN cases; FCs and/or fascicular enlargements were identified in 88% of US cases. Most FCs were in the mediannerve posterior/posteromedial region and were proximal to the elbow joint line (mean distance: MRN, 5.4 cm; US, 7.5 cm), with the exception of a single FC (located 1 cm distal). No extrinsic compression of median or anterior interosseous nerves was identified in the arm or forearm. DISCUSSION: AINS is a noncompressive neuropathy characterized by median nerve FCs in the arm.

publication date

  • December 13, 2019

Research

keywords

  • Median Nerve
  • Peripheral Nervous System Diseases

Identity

Scopus Document Identifier

  • 85076826552

Digital Object Identifier (DOI)

  • 10.1002/mus.26768

PubMed ID

  • 31773766

Additional Document Info

volume

  • 61

issue

  • 3