Short-term Clinical Effect Analysis Of Signal Changes After Posterior Decompression In Patients With MRI-T2WI Intramedullary High-signal Cervical Spondylotic Myelopathy

Objective:The results of posterior open-door laminoplasty in patients with or without MRI-T2 WI intramedullary hypersignal were compared.Methods:The clinical and imaging data of 95 patients with cervical spondylotic myelopathy who received posterior open-door expansive spinal canal plasty in the hospital were retrospectively analyzed,and the influencing factors of postoperative signal changes and the influence on the prognosis of patients were analyzed.Results:First,95 patients were divided into high signal group and no signal change group(group B)according to whether there was signal change before MRI T2 WI,and then 56 patients with high signal before MRI T2 WI were divided into signal improvement group(group A1)and signal no significant change group(group A2)according to whether there was signal improvement after operation.The results of comparing the baseline data of the three groups showed that the course of disease in high signal A2 group was longer and the preoperative JOA score was lower Spinal cord compression is relatively high.(P<0.05)。 The results showed that the JOA improvement rate of patients in high signal A2 group was the worst(P < 0.05).The patients were divided into three groups according to the number of segments involved by high signal on preoperative MRI T2 WI.The results showed that the more segments involved,the worse the prognosis(P < 0.05).Conclusion:Patients with CSM with high intramedullary signal on MRI T2 WI had a worse prognosis than those without high intramedullary signal,and patients with improved INTRamedullary ISI had a better prognosis than those without improved intramedullary signal.