Correlation analysis between electromyogram combined with MRI and the curative effect of surgery for cervical spondylotic myelopathy / 中国矫形外科杂志

ABSTRACT

[Objective]To observe the correlation between electromyogram(EMG) combined with MRI and clinical outcome in patients with cervical spondylotic myelopathy(CSM). [Methods]Patients with CSM who were confirmed by clinical and image examination were examined by EMG.Peripheral nerve injury such as cubital tunnel syndrome and carp tunnelsyndrome were excluded.Eighty-nine cases were selected and followed-up after surgical treatment with anterior,posterior,or posterior-anterior combined surgery.Four types were classified according to EMG and MRI.Type IEMG/MRI(-/-).Type IIEMG/MRI(-/+).Type III EMG/MRI(+/-).Type IVEMG/MRI(+/+).The clinical outcome were also graded according to the Japanese Orthopaedic Association(JOA) scoring system.Furthermore,the data were analyzed statistically to explore the correlation of the factors.[Results]The results showed that 36 cases were in Type Ⅰ,17 were in Type Ⅱ,10 were in Type Ⅲ and 26 were in Type Ⅳ.Clinical function was excellent in 42 patients,good in 20 patients,fair in 18 patients,and poor in 9 patients.There was a good correlation between types and the clinical outcome(Hc=30.72,P