Impact of Neurodynamic Sequencing on the Mechanical Behaviour of the Median Nerve and Brachial Plexus: An Ultrasound Shear Wave Elastography Study
2024

Impact of Neurodynamic Sequencing on Nerve Stiffness

Sample size: 31 publication Evidence: high

Author Information

Author(s): Ciuffreda Gianluca, Estébanez-de-Miguel Elena, Albarova-Corral Isabel, Malo-Urriés Miguel, Shacklock Michael, Montaner-Cuello Alberto, Bueno-Gracia Elena

Primary Institution: University of Zaragoza

Hypothesis

The study aimed to analyze the differences in stiffness of the median nerve and brachial plexus using different sequences of the Upper Limb Neurodynamic Test 1.

Conclusion

The stiffness of the brachial plexus and median nerve varies depending on the joint movement sequence during neurodynamic testing.

Supporting Evidence

  • Significant interaction was found between ULNT1 sequence and location (p < 0.001).
  • ULNT1-STD and ULNT1-DIST induced a greater stiffness increase in the median nerve compared to C5 and C6.
  • The ULNT1-PROX resulted in a significantly smaller increase in stiffness at the median nerve but a greater increase at C5 and C6.

Takeaway

Changing the order of movements during a nerve test can make the nerve feel stiffer or looser, which helps doctors understand how to treat nerve problems better.

Methodology

A cross-sectional study measuring shear wave velocity at the median nerve and brachial plexus in 31 healthy subjects during three sequences of the ULNT1.

Potential Biases

Potential bias due to the subjective nature of symptom reporting during the tests.

Limitations

The influence of surrounding tissues on shear wave velocity measurements may affect the results.

Participant Demographics

31 healthy participants, aged 18 to 65, with 20 females and 11 males.

Statistical Information

P-Value

p < 0.001

Statistical Significance

p < 0.001

Digital Object Identifier (DOI)

10.3390/diagnostics14242881

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