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  • Title: Predictive value of magnetic resonance imaging indications of spinal cord swelling for cervical spondylotic myelopathy prognosis.
    Author: Tian XN, Zhang L, Liu HR, Zhang XS, Sun YC, Wang Y.
    Journal: Technol Health Care; 2024; 32(1):151-162. PubMed ID: 37092193.
    Abstract:
    BACKGROUND: Magnetic resonance imaging (MRI) is the preferred examination approach for patients with suspected cervical spondylotic myelopathy (CSM). OBJECTIVE: To investigate the predictive value of MRI spinal cord swelling on the prognosis of decompression surgery in patients with CSM. METHODS: A retrospective analysis of 115 patients with CSM who underwent decompression surgery was performed. According to whether cervical MRI showed spinal cord swelling, they were divided into a spinal cord swelling group and non-swelling group. The Modified Japanese Orthopaedic Association (MJOA) score, MJOA improvement rate and abnormal spinal cord enhancement rate in the two groups were compared before and after surgery. Multiple linear regression was used to analyse the influencing factors of the MJOA improvement rate. RESULTS: The time from symptom onset to operation (t= 2.400, p= 0.018) and preoperative MJOA score in the spinal cord swelling group were lower than those in the non-swelling group (t= 3.253, p= 0.002). The body mass index (t= 2.895, p= 0.005), anteroposterior diameter of the spinal canal (t= 4.421, p< 0.001), cross-sectional area (t= 3.136, p= 0.002), postoperative improvement rate (t= 4.277, p< 0.001) and proportion of abnormal enhancement of the spinal cord in the swelling group were higher than those in the non-swelling group (χ2= 3.136, p= 0.002). The preoperative MJOA score in the swelling group was lower than that in the non-swelling group (t= 2.583, p= 0.013). A multivariate linear regression model revealed that age and spinal cord swelling were independent predictors of MJOA score improvement, explaining 33.2% of the total variation. CONCLUSION: Patients with CSM with spinal cord swelling have less time from symptoms to surgery, and the degree of preoperative neurological deterioration is more obvious. Spinal cord swelling is an independent predictor of surgical prognosis in patients with CSM.
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