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Updated: Jan 27, 2026

In Vivo Electrophysiological Measurement of the Rat Ulnar Nerve with Axonal Excitability Testing
Published on: February 6, 2018
Side-to-side elbow range of movement variability in an ulnar neurodynamic test sequence variant in asymptomatic
Michelle Meng Yim Tong1, Vincent Cheng-Hsin Liu1, Toby Hall1
1School of Physiotherapy and Exercise Science, Curtin University of Technology, Perth, Western Australia 6102, Australia.
Background:
Range of motion (ROM) asymmetry between sides is one indicator of a positive neurodynamic test, but this has been less well studied for the ulnar nerve.
Objective:
The purpose of this study was to investigate side-to-side variation in elbow ROM during an ulnar neurodynamic test sequence, including contralateral cervical side flexion, in 40 asymptomatic subjects.
Methods:
A traditional goniometer was used to measure elbow flexion ROM at two end points, onset of resistance ( 1) and symptom onset ( 1). Two repeated measures of 1 and 1 were taken on each side.
Results:
Reliability for 1 and 1 was found to be good (ICC , SEM ) with no significant difference in mean ROM between sides. A significant relationship between sides was seen ( values ) and values ; this indicates at least 23% of the variance observed in one limb was accounted for by range in the opposite limb. This relationship was slightly stronger for 1 than 1. Lower bound scores indicate that intra-individual ROM difference for 1 and 22° for 1 would exceed normal ROM asymmetry.
Conclusion:
These findings provide clinicians with background information of ROM asymmetry during the ulnar neurodynamic test.
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