Reliability and accuracy of the brachial plexus neurodynamic test

Area of Science:

• Neuroscience
• Physical Therapy
• Biomedical Engineering

Background:

• The brachial plexus neurodynamic test (BPNT) is a novel clinical tool designed to objectively evaluate brachial plexus extensibility.
• Despite its clinical utility, the psychometric properties of the BPNT require thorough investigation.

Purpose of the Study:

• To assess the inter- and intrarater reliability and accuracy of the BPNT.
• To determine if professional experience or geographic region influences BPNT accuracy.

Main Methods:

• An observational study involving 307 participants at neural mobilization conferences.
• Phase 1: Assessed inter-rater reliability and accuracy using video recordings of the BPNT.
• Phase 2: Evaluated intrarater reliability by having participants re-score the same videos.

Main Results:

• High inter-rater reliability (ICC: 0.98-0.99) and accuracy (0.88-0.94) were observed across all experience levels and regions.
• High intrarater reliability (ICC: 0.96-1.0) was also found.
• No significant differences in accuracy were associated with professional experience or geographic region.

Conclusions:

• The BPNT exhibits excellent inter- and intrarater reliability and accuracy.
• Clinicians can reliably use the BPNT to assess neural mobility outcomes.
• BPNT's effectiveness is consistent regardless of clinician experience or location.