目的:评估颈椎后路单开门椎管扩大成形微型钛板与侧块螺钉固定术后,颈椎矢状位参数变化与疗效的相关性分析。方法:回顾性分析2022年9月至2024年1月脊髓型颈椎病的患者29例,其中行微型钛板固定的手术患者18例,侧块螺钉固定患者11例,所有患者均行C3~C6后路单开门椎管扩大成形术。随访时间为术后12个月,记录手术前后日本骨科矫形协会评分(JOA)、疼痛视觉模拟评分(VAS)、颈部功能障碍指数(NDI)评估颈椎功能状态。术前、术后和随访时行颈椎正侧位X线片、CT三维重建和MRI检查,测量术前及末次随访时的颈椎矢状位参数,包括C2~C7 Cobb角、C2~C7矢状面轴向距离(sagittal venical axis, SVA)和T1倾斜角。结果:两组手术末次随访时JOA评分、VAS评分及NDI评分均较术前有明显改善(P 0.05)。微型钛板固定组C2~C7 Cobb角由术前19.08 ± 2.70减小至14.76 ± 3.40,差异有统计学意义(P 0.05)。结论:微型钛板固定与侧块螺钉固定的颈椎后路单开门手术治疗脊髓型颈椎病均有确切的疗效。微型钛板组手术前后矢状位参数存在明显差异,但末次随访时两组颈椎矢状位参数无显著差异,矢状位参数变化与患者疗效无显著相关性。Objective: To evaluate the correlation between changes in cervical sagittal parameters and clinical efficacy following posterior open-door laminoplasty using mini-plate fixation versus lateral mass screw fixation for cervical spondylotic myelopathy (CSM). Methods: A retrospective analysis was conducted on 29 CSM patients treated between September 2022 and January 2024. Among them, 18 underwent C3~C6 posterior open-door laminoplasty with mini-plate fixation, and 11 received lateral mass screw fixation. All patients were followed up for 12 months. Preoperative and postoperative functional outcomes were assessed using the Japanese Orthopaedic Association (JOA) score, Visual Analogue Scale (VAS), and Neck Disability Index (NDI). Cervical sagittal
