Original Research
Ultrasound diagnosis of ulnar nerve entrapment by confirming baseline cross-sectional area measurement for normal and abnormal nerves
Submitted: 30 October 2014 | Published: 05 August 2015
About the author(s)
Tania Roodt, Department of Radiography, University of Johannesburg, South AfricaBarbara van Dyk, Department of Radiography, University of Johannesburg, South Africa
Sylvia Jacobs, Department of Radiography, University of Johannesburg, South Africa
Abstract
Objectives: To confirm the suggested CSA measurement of 0.075 cm² and discuss the difference in CSA measurement between abnormal nerves, nerves in the contra-lateral elbow of the same participant, and those of asymptomatic participants.
Methods: Ultrasonography was performed on both elbows of 25 patients with confirmed unilateral ulnar nerve entrapment and on 25 healthy controls for comparison. Three CSA measurements were taken of the ulnar nerve along its course, and the mean measurement was recorded.
Results: CSA measurements were significantly different between patients with ulnar nerve entrapment and healthy controls (p < 0.05). In our study, a CSA >0.070 cm² defined ulnar nerve entrapment at the elbow.
Conclusion: Ultrasound CSA measurement of the ulnar nerve is accurate in the diagnosis of ulnar nerve entrapment. The range of values and varied criteria previously reported call for standardisation of the procedure and CSA measurement. We suggest that a measurement of 0.070 cm² be considered as a new baseline for the optimal diagnosis of ulnar nerve entrapment.
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Crossref Citations
1. Sonographic normal values for the cross-sectional area of the ulnar nerve: a systematic review and meta-analysis
Nadine Boers, Enrico Martin, Marc Mazur, David D. Krijgh, Monique H. M. Vlak, Godard C. W. de Ruiter, H. Stephan Goedee, J. Henk Coert
Journal of Ultrasound year: 2022
doi: 10.1007/s40477-022-00661-8