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01.03.2016 | Musculoskeletal

Correlation of force control with regional spinal DTI in patients with cervical spondylosis without signs of spinal cord injury on conventional MRI

verfasst von: Påvel G. Lindberg, Katherine Sanchez, Fidan Ozcan, François Rannou, Serge Poiraudeau, Antoine Feydy, Marc A. Maier

Erschienen in: European Radiology | Ausgabe 3/2016

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Abstract

Objectives

The aim of this study was to investigate spinal cord structure in patients with cervical spondylosis where conventional MRI fails to reveal spinal cord damage.

Methods

We performed a cross-sectional study of patients with cervical spondylosis without conventional MRI findings of spinal cord damage and healthy controls. Subjects were studied using spinal diffusion tensor imaging (DTI), precision grip and foot force-tracking tasks, and a clinical examination including assessment of neurological signs. A regional analysis of lateral and medial spinal white matter across multiple cervical levels (C1–C5) was performed.

Results

DTI revealed reduced fractional anisotropy (FA) and increased radial diffusivity (RD) in the lateral spinal cord at the level of greatest compression (lowest Pavlov ratio) in patients (p < 0.05). Patients with spondylosis had greater error and longer release duration in both grip and foot force-tracking. Similar spinal cord deficits were present in patients without neurological signs. Increased error in grip and foot tracking (low accuracy) correlated with increased RD in the lateral spinal cord at the level of greatest compression (p ≤ 0.01).

Conclusions

Spinal DTI can detect subtle spinal cord damage of functional relevance in cervical spondylosis, even in patients without signs on conventional T2-imaging and without neurological signs.

Key Points

• DTI reveals spinal cord changes in cervical spondylosis with few symptoms

• DTI changes were present despite normal spinal cord on conventional MRI

• DTI parameters correlated with force control accuracy in hand and foot

• Spinal DTI is a promising technique for patients with cervical spondylosis

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Titel: Correlation of force control with regional spinal DTI in patients with cervical spondylosis without signs of spinal cord injury on conventional MRI
verfasst von: Påvel G. Lindberg
Katherine Sanchez
Fidan Ozcan
François Rannou
Serge Poiraudeau
Antoine Feydy
Marc A. Maier
Publikationsdatum: 01.03.2016
Verlag: Springer Berlin Heidelberg
Erschienen in: European Radiology / Ausgabe 3/2016
Print ISSN: 0938-7994
Elektronische ISSN: 1432-1084
DOI: https://doi.org/10.1007/s00330-015-3876-z

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Correlation of force control with regional spinal DTI in patients with cervical spondylosis without signs of spinal cord injury on conventional MRI