Jane Greening1, Andrew Dilley1. 1. Division of Clinical and Laboratory Investigation, Brighton and Sussex Medical School, Medical Research Building, University of Sussex, Falmer, Brighton, BN1 9PS, United Kingdom.
Abstract
INTRODUCTION: Peripheral nerves slide and stretch during limb movements. Changes in nerve stiffness associated with such movements have not been examined in detail but may be important in understanding movement-evoked pain in patients with a variety of different musculoskeletal conditions. METHODS: Shear-wave elastography was used to examine stiffness in the median and tibial nerves of healthy individuals during postures used clinically to stretch these nerves. RESULTS: Shear-wave velocity increased when limbs were moved into postures that are thought to increase nerve stiffness (mean increase: median nerve = 208% in arm, 236% in forearm; tibial nerve = 136%). There was a trend toward a negative correlation between age and shear-wave velocity (r = 0.58 for tibial nerve). CONCLUSIONS: Shear-wave elastography provides a tool for examining nerve biomechanics in healthy individuals and patients. However, limb position, age, and effects of nerve tension on neural architecture should be taken into consideration. Muscle Nerve 55: 213-222, 2017.
INTRODUCTION: Peripheral nerves slide and stretch during limb movements. Changes in nerve stiffness associated with such movements have not been examined in detail but may be important in understanding movement-evoked pain in patients with a variety of different musculoskeletal conditions. METHODS: Shear-wave elastography was used to examine stiffness in the median and tibial nerves of healthy individuals during postures used clinically to stretch these nerves. RESULTS: Shear-wave velocity increased when limbs were moved into postures that are thought to increase nerve stiffness (mean increase: median nerve = 208% in arm, 236% in forearm; tibial nerve = 136%). There was a trend toward a negative correlation between age and shear-wave velocity (r = 0.58 for tibial nerve). CONCLUSIONS: Shear-wave elastography provides a tool for examining nerve biomechanics in healthy individuals and patients. However, limb position, age, and effects of nerve tension on neural architecture should be taken into consideration. Muscle Nerve 55: 213-222, 2017.
Authors: Mohamed A Bedewi; Mamdouh A Kotb; Nasser M Aldossary; Ahmed M Abodonya; Ayman K Saleh; Sherine Mohamed Swify Journal: J Int Med Res Date: 2021-01 Impact factor: 1.671
Authors: Mohamed Abdelmohsen Bedewi; Ayman A Elsifey; Mamdouh A Kotb; Abdelmohsen Mohamed Bediwy; Yasmin M Ahmed; Sherine Mohamed Swify; Ahmed M Abodonya Journal: Medicine (Baltimore) Date: 2020-09-11 Impact factor: 1.817