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- Title
Myelopathy disability index: establishing criteria for mild, moderate and severe impairment in patients with degenerative cervical myelopathy.
- Authors
Pons Carreto, Alba; Ramírez Valencia, Manuel; de García Frutos, Ana; Khoudeir Avila, Andrea; Montesinos Magraner, Lluisa; Nuñez-Pereira, Susana; Haddad, Sleiman; Pellisé Urquiza, Ferran
- Abstract
Purpose: To find the cut-off values in the Myelopathy Disability Index (MDI) that will allow us to classify the severity of Degenerative Cervical Myelopathy (DCM) into mild, moderate and severe. Methods: Cross-sectional study with prospective data collection, with a total of 64 patients diagnosed with Degenerative Cervical Myelopathy (DCM). Anthropometric, diagnostic, neurological, functional and quality of life variables were collected. A Receiver Operating Curve (ROC) was performed. The cut-off points were validated by comparing the functional status of patients in the 3 groups and their Nurick scores. Results: Sixty-four patients (23 women) with a mean age of 61.97 (SD 11.57) participated in this study. The majority of patients were Nurick I (28.13%) and Nurick II (32.81%). The medium MDI was 7.36 (SD 6.66) and the mJOA was 14.08 (SD 2.57). The mild-moderate cut-off value was between 4 and 5, with an Area Under the Curve (AUC) of 0.805, sensitivity of 0.853 and specificity of 0.6. For moderate-severe, the cut-off value obtained was between 7 and 8, with an AUC of 0.862, sensitivity of 0.857 and specificity of 0.684. Patients with greater severity had significantly lower functionality, with a P-value of 0.004 in the 30 Metre Walking Test and 0.005 in the Nine-Hole Peg Test. Established severity groups were also significantly related to the different categories of the Nurick score (P-value = 0.000). Conclusion: MDI values between 0 and 4 correspond to mild DCM, between 5 and 7 would be moderate DCM and from 8 to 30 indicate severe DCM.
- Subjects
SPINAL cord diseases; DISABILITIES; FUNCTIONAL status; SENSITIVITY &; specificity (Statistics); QUALITY of life
- Publication
European Spine Journal, 2023, Vol 32, Issue 2, p584
- ISSN
0940-6719
- Publication type
Article
- DOI
10.1007/s00586-022-07506-2