Cord compression defined by MRI is the driving factor behind the decision to operate in Degenerative Cervical Myelopathy despite poor correlation with disease severity.
Mannion, Richard J
Crawford, John R
Laing, Rodney J
Public Library of Science (PLoS)
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Hilton, B., Tempest-Mitchell, J., Davies, B., Francis, J., Mannion, R. J., Trivedi, R., Timofeev, I., et al. (2019). Cord compression defined by MRI is the driving factor behind the decision to operate in Degenerative Cervical Myelopathy despite poor correlation with disease severity.. PloS one, 14 (12), e0226020. https://doi.org/10.1371/journal.pone.0226020
The mainstay treatment for Degenerative Cervical Myelopathy (DCM) is surgical decompression. Not all cases, however, are suitable for surgery. Recent international guidelines advise surgery for moderate to severe disease as well as progressive mild disease. The goal of this study was to examine the factors in current practice that drive the decision to operate in DCM. Study Design Retrospective cohort study Methods 1 year of cervical spine MRI scans (N=1123) were reviewed to identify patients with DCM with sufficient clinical documentation (N=39). Variables at surgical assessment were recorded: age, sex, clinical signs and symptoms of DCM, disease severity, and quantitative MRI measures of cord compression. Bivariate correlations were used to compare each variable with the decision to offer the patient an operation. Subsequent multivariable analysis incorporated all significant bivariate correlations. Results Of the 39 patients identified, 25 (64%) were offered an operation. The decision to operate was significantly associated with narrower non-pathological canal and cord diameters as well as cord compression ratio, explaining 50% of the variance. In a multivariable model, only cord compression ratio was significant (p=0.017). Examination findings, symptoms, functional disability, disease severity, disease progression, and demographic factors were all non-significant. Conclusions Cord compression emerged as the main factor in surgical decision-making prior to the publication of recent guidelines. Newly identified predictors of post-operative outcome were not significantly associated with decision to operate.
Humans, Spinal Cord Compression, Magnetic Resonance Imaging, Decompression, Surgical, Severity of Illness Index, Retrospective Studies, Decision Making, Aged, Middle Aged, Female, Male, Cervical Cord
NIHR and Wellcome Trust / MRC
Department of Health (via National Institute for Health Research (NIHR)) (CS-2015-15-023)
Embargo Lift Date
External DOI: https://doi.org/10.1371/journal.pone.0226020
This record's URL: https://www.repository.cam.ac.uk/handle/1810/299311
Attribution 4.0 International
Licence URL: https://creativecommons.org/licenses/by/4.0/