The Incidence, Grading, and Treatment of Spinal Epidural Hematoma After Cervical Laminoplasty: A Retrospective Study Based on Postoperative MRI of 207 Patients

= .141). Clinical outcomes, including Japanese Orthopaedic Association (JOA) scores, and neck Numerical Rating Scale (NRS) scores were comparable between groups at the 3-month follow-up. No independent predictors of SEH were identified.ConclusionsMRI-detectable postoperative SEH was observed in more than one-third of patients after LAMP, and most cases were asymptomatic. The proposed grading system may support stratified management. Clinical outcomes were comparable between groups, and epidural scar formation was more frequent in the SEH group, but not statistically significant.