ISSN: 1859 - 2872
Investigating some imaging features and their correlation with clinical status of multilevel degenerative cervical myelopathy: Analysis of 34 patients
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Abstract
Objective: To investigate some radiographic and magnetic resonance imaging (MRI) features of multilevel cervical spinal stenosis and determine their correlation with clinical status. Subject and method: 34 multilevel cervical spinal stenosis patients with myelopathy, which was retrospectively assessed according to the JOA score. Investigated parameters: C2C7 lordosis angle, spinal instability (on conventional X-ray), signal change of spinal cord on T2W and T1W, Compression Ratio (CR), Maximum Canal Compromise (MCC), Maximum Spinal Cord Compression (MSCC) index and Spinal Cord Occupation Ratio (SCOR) on Magnetic Resonance. Evaluate the correlation of these parameters with the JOA score at admission. Result: The mean C2C7 lordosis angle was 11.95º ± 12.30º with 32.4% having kyphosis and 55.9% spinal instability. On Magnetic Resonance: 91.2% increased signal intensity on T2W, 14.7% decreased on T1W. The mean values of parameters CR, MCC, MSCC were respectively: 0.31 ± 0.11; 53.27 ± 13.83% and 37.67 ± 17.79%. The mean values of SCOR was 54.58 ± 8.49%, with 2/34 (5.9%) having SCOR ≥ 70%. There was no relation between JOA score with changes in spinal cord signal on T1W, cervical spine morphology and spinal instability (p>0.05). However, there was a relation between JOA score with the change of signal intensity on T2W (p=0.007). There was no correlation between JOA score at admission and CR, MCC, MSCC (r ~ 0, p>0.05). There was a negative correlation between CR and MCC (r: -0.39, p=0.022), MSCC (r: -0.482, p=0.004). Conclusion: There was no correlation between preoperative JOA score with morphology, spine instability and CR, MCC and MSCC indexes, on magnetic resonance (p>0.05). However, there was a strong correlation between neurological status and changes in signal intensity on T2-weighted images (p=0.007).
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References
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