Posture‐induced changes in peripheral nerve stiffness measured by ultrasound shear‐wave elastography

Greening, Jane; Dilley, Andrew

doi:10.1002/mus.25245

Cited by 56 publications

(100 citation statements)

References 43 publications

(45 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In our investigation strain elastrography have shown high and very usefull operating characteristics by ROC analysis (1,7). This can be explained by shortening of sciatic nerve diameter during the flexion.…”

Section: Discussionmentioning

confidence: 53%

“…Symptoms vary and can include pain and numbness down the leg (Cass and Liebert) and worsened with sitting or running (2,11). The radiographs and the MRI image of the lumbar spine and pelvis showed no pertinent findings, by Martin and Michel (12,13 Authors Andrade, Greening (2016Greening ( ,2017, Santos, Ellis (2015), Neto and Dikici reffered that elastography was applied (1,3,4,5,6,7,15 and 17) to develop diagnostic possibilities and improve therapeutic modalities. The full testing of sciatic nerve during limb movements have not been examined in detail, but Andrade and Ellis noticed sciatic nerve tightening with ankle and knee movements (1,5).…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Nerve stiffness - a challenge for ultrasound elastography

Stajić¹,

Vojvodic²,

Carro³

et al. 2018

IJCAR

View full text Add to dashboard Cite

Section: Discussionmentioning

confidence: 53%

Section: Introductionmentioning

confidence: 99%

Nerve stiffness - a challenge for ultrasound elastography

Stajić¹,

Vojvodic²,

Carro³

et al. 2018

IJCAR

View full text Add to dashboard Cite

“…The deformity of the median nerve during wrist flexion or extension has already been shown and the CSA of the median nerve has been reported to decrease during wrist motion [5]. Also, the acute postural changes of the wrist have been reported to increase the median nerve stiffness [3]. Moreover, acute positional changes or acute increase in the pressure of the carpal tunnel may cause increase in both the intraneurial blood flow and the CSA of the median nerve due to edema [11].…”

Section: Discussionmentioning

confidence: 98%

“…Also, the improvements in US technology have made it possible to measure tissue stiffness noninvasively by elastography. A recently published study showed that posture-induced changes could be detected by Shear-Wave Elastography (SWE) at the median nerve [3]. Previous US studies have reported conflicting results on whether median nerve cross-sectional area (CSA) is altered in different wrist postures [4][5][6].…”

Section: Introductionmentioning

confidence: 99%

Effects of chronic flexed wrist posture on the elasticity and crosssectional area of the median nerve at the carpal tunnel among chronic stroke patients

Aslan

Analan

2018

Med Ultrason

View full text Add to dashboard Cite

Aim: To investigate the effects of chronic flexed wrist posture following spasticity on the elasticity and cross-sectional area (CSA) of the median nerve at the carpal tunnel among chronic stroke patients.Material and method: This prospective study included 24 consecutive patients (mean age, 56.5±11.56 years) with unilateral wrist spasticity following a stroke in a chronic phase. The CSA of the median nerve was measured by ultrasound (US). The elasticity was measured by Virtual Touch tissue imaging quantification (VTIQ; Siemens, Erlangen, Germany). SWV and CSA of the median nerves of the affected and unaffected sides for each patient were compared. The correlations between duration of time since the stroke, SWV and CSA of the median nerve were assessed. The interobserver agreement was assessed.Results: The CSA of the median nerve at the affected side was significantly lower than that of the unaffected side (p = 0.03). The SWV of the median nerve at the affected side was significantly higher than that on the unaffected side (p < 0.001). The interobserver agreement was excellent for both CSA and SWV measurements. There was a negatively fair correlation between CSA at the affected side and duration of time since stroke (r = -0.58, p < 0.05). The SWV of the median nerve at the affected side was not correlated with the duration of time since stroke (r ≤ 0.3, p ≥ 0.05).Conclusions: These results suggest that chronic flexed wrist posture may cause atrophy of the median nerve due to chronic compression after stroke and increase in the stiffness of the median nerve.

show abstract

“…The clinical value of intraneural vascular flow is currently under debate. Elastography can be used to assess the stiffness of nerves, although no evidence exists in relation to its value for assessing neuropathy 29,30 .…”

Section: Ultrasonographymentioning

confidence: 99%

New technologies for the assessment of neuropathies

et al. 2017

View full text Add to dashboard Cite

Peripheral neuropathies are among the most common neurological disorders 1 . In routine clinical practice, diagnosis of peripheral neuropathies is typically based on clinical assessment, nerve conduction studies and needle electromyography, which can determine whether symptoms are caused by primary axonal damage or demyelinating damage. This distinction is often relevant to therapeutic choices and to prognosis, as axonal damage typically reflects an inflammatory (for example, vasculitic) or degenerative (for example, hereditary or idiopathic) process that correlates with disability, whereas demyelinating damage can reflect a hereditary neuro pathy, but more often reflects an acquired immunemediated neuropathy. Besides metabolic, inflammatory or primary degenerative neuropathies, peripheral nerves can also be damaged by compression from adjacent tissue structures, such as tendons, cysts or haematomas. In this case, proper identification of the site, nature and degree of the lesion might be challenging, but is relevant to treatment and prognosis. Moreover, some patients present with symptoms that suggest damage to small nerve fibres, which nerve conduction studies cannot be used to detect.In the past 15 years, several techniques have become available to investigate focal and diffuse peripheral neuropathies, and their reliability has widened the spectrum of diagnostic tools for clinicians and improved assessment of neuropathies. In this Review, we provide an overview of these new and emerging technologies. We first discuss peripheral nerve imaging with MRI and ultrasonography, which can provide information about the precise localization of neuro pathies and the pathological processes involved in large-fibre neuropathies, and can complement clinical and electrophysiological evaluation. We then consider techniques that can provide diagnostic information when the pathological process is restricted to small nerve fibres and is consequently not detectable with nerve conduction studies or neuroimaging. These include skin biopsy, which is established in clinical practice, and the emerging techniques of corneal confocal microscopy, laser-evoked potentials and heat-related and pain-related evoked potentials, and microneurography.Nerve imaging technology Advances in imaging techniques have made it possible to gain great insight into nerve pathology with magnetic resonance and ultrasound. Each approach offers distinct advantages, and can provide different information about damage to large myelinated fibres. Abstract | Technical advances are rapidly changing the clinical and instrumental approach to peripheral nerve diseases. Magnetic resonance neurography, diffusion tensor imaging and nerve ultrasonography are increasingly entering the diagnostic workup of peripheral neuropathies as tools that complement neurophysiology and enable investigation of proximal structures, such as plexuses and roots. Progress in the design of magnetic resonance scanners and sequences, and the development of high-frequency ultrasound probes mean th...

show abstract

Posture‐induced changes in peripheral nerve stiffness measured by ultrasound shear‐wave elastography

Abstract: Introduction: Peripheral nerves slide and stretch during limb movements. Changes in nerve stiffness

Cited by 56 publications

References 43 publications

Nerve stiffness - a challenge for ultrasound elastography

Nerve stiffness - a challenge for ultrasound elastography

Effects of chronic flexed wrist posture on the elasticity and crosssectional area of the median nerve at the carpal tunnel among chronic stroke patients

New technologies for the assessment of neuropathies

Contact Info

Product

Resources

About