Ultrasonographic measurements of the ulnar nerve at the elbow: role of confounders

Journal of Ultrasound in Medicine : Official Journal of the American Institute of Ultrasound in Medicine
Kerry ThoirsMaureen Phillips

Abstract

The purpose of this study was to identify factors confounding high-resolution ultrasonographic measurements of the ulnar nerve to test their influence when discriminating between limbs affected and unaffected by ulnar nerve entrapment (UNE) at the elbow. High-resolution ultrasonographic measurements of ulnar nerve dimensions at the elbow were compared between 2 groups of subjects: symptomatic and asymptomatic for UNE. Rank analysis of covariance regression tests were performed to determine whether significant differences existed between the 2 groups. The changing coefficient method (using rank analysis of covariance tests) was used to test for potential confounding effects of age, weight, height, body mass index, sex, limb sidedness, limb handedness, and nerve mobility. These tests were repeated for each measurement while controlling for the identified confounders. Exact 2-tailed Wilcoxon signed rank tests were performed to test for significant differences between measurements of the diameter of the ulnar nerve with the elbow in full extension and full flexion. Age, weight, body mass index, sex, and elbow position were shown to have confounding influences on high-resolution ultrasonographic measurements of the ulnar nerve. No c...Continue Reading

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Citations

Aug 24, 2010·AJR. American Journal of Roentgenology·Theodore T Miller, William R Reinus
Nov 22, 2011·Muscle & Nerve·Davyd R HooperSteven K Baker
Apr 18, 2013·The Journal of Hand Surgery, European Volume·E YalcinO Z Karaahmet
Apr 30, 2013·Muscle & Nerve·Sun Jae WonHyuk Choi
Mar 31, 2019·Muscle & Nerve·Joon Shik YoonSun Jae Won
May 14, 2009·Neurosurgical Focus·Ralph W KoenigThomas Kretschmer
Nov 14, 2014·Journal of Clinical Neurophysiology : Official Publication of the American Electroencephalographic Society·Kiril E B van VeenViviane van Kasteel
Jul 13, 2019·Hand : Official Journal of the American Association for Hand Surgery·Stefano LucchinaMarco Guidi
Apr 13, 2011·Muscle & Nerve·Roy BeekmanWim Im Verhagen
Jun 27, 2015·Journal of Ultrasound in Medicine : Official Journal of the American Institute of Ultrasound in Medicine·Giampietro ZanetteStefano Tamburin
Mar 6, 2021·European Journal of Radiology Open·Marcel PrasetyoStefanus Imanuel Setiawan
Jun 22, 2021·Journal of Clinical Orthopaedics and Trauma·Arjun Ajith NaikAbhinav Gulihar

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