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Related Experiment Video

Updated: Feb 15, 2026

Preparation of Rat Sciatic Nerve for Ex Vivo Neurophysiology

Preparation of Rat Sciatic Nerve for Ex Vivo Neurophysiology

Published on: July 12, 2022

Sciatic nerve stiffness is not changed immediately after a slump neurodynamics technique.

Tiago Neto^1,2, Sandro R Freitas^1,3, Ricardo J Andrade^1,4

¹Faculdade de Motricidade Humana, Universidade de Lisboa, Lisbon, Portugal.

Muscles, Ligaments and Tendons Journal

|February 2, 2018

Summary

Neurodynamics techniques did not alter sciatic nerve stiffness in healthy individuals. This suggests neural tissue compliance, but further research is needed in different populations and with other techniques.

Keywords:

elastography nerve biomechanics shear wave velocity

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Area of Science:

Neuroscience
Biomechanics
Musculoskeletal rehabilitation

Background:

Neurodynamics techniques are used to assess and improve neural mechanosensitivity.
Limited in vivo evidence exists on the mechanical effects of neurodynamics on nerve stiffness.
This study investigates the immediate impact of a slump neurodynamics technique on sciatic nerve stiffness.

Purpose of the Study:

To examine the immediate effects of a slump neurodynamics technique on sciatic nerve shear wave velocity (SWV), an indicator of nerve stiffness.
To assess changes in passive ankle dorsiflexion torque following the neurodynamics intervention.
To evaluate the reliability of SWV measurements for assessing nerve stiffness.

Main Methods:

Fourteen healthy participants underwent measurements of sciatic SWV and passive ankle torque during dorsiflexion.
The slump neurodynamics technique was applied for 3 minutes to one lower limb, with the contralateral limb serving as a control.
Measurements were taken before and immediately after the intervention.

Main Results:

The slump neurodynamics technique did not result in significant changes in sciatic SWV (P=0.78) or passive ankle dorsiflexion torque (P=0.14).
High intra-rater reliability for SWV measurements was observed (ICC=0.88).
Low standard error of measurement for SWV indicates measurement precision.

Conclusions:

Sciatic nerve stiffness in healthy individuals remains unchanged immediately after a slump neurodynamics technique.
This suggests neural tissue exhibits compliance under tensile loads.
Further investigation is recommended using different neurodynamics techniques and in populations with peripheral neuropathies.