【摘要】 目的　脊柱融合是治疗脊柱侧凸的基本方法。脊柱的生物力学性质在融合后会发生改变 ,这种变化可能导致背部肌肉功能异常。本文研究脊柱侧凸患者脊柱融合手术前和手术两年后背部肌肉功能的改变。方法　采集和分析 1 8例脊柱侧凸患者脊柱融合手术两年后背部四对肌肉的肌电信号 ,得到信号的平均方根值、中频值和肌电包络等参数 ,并和手术前进行比较。结果　手术两年后 ,病人肌电的幅度增加、中频值下降 ,同时背部两侧肌电包络的对称性降低。结论　手术两年后患者背部肌肉的各项肌电参数发生的变化和废用性肌肉萎缩的特征一致 ,表明融合术两年后 ,脊柱侧凸患者的背部肌肉已经出现萎缩现象。更多还原

【Abstract】 Objective Spinal fusion is a basic orthopaedy for scoliosis. Biomechanical characteristics of spine change after the fusion, which will probably induce dysfunction of back muscles in scoliosis patients. The change of function of back muscles in scoliosis patients two years after spinal fusion was studied. Methods Electromyography(EMG) of four pairs of back muscles in 18 scoliosis patients are detected and analyzed two years after spinal fusion. RMS,median frequency and LE EMG of the signals are acquired and compared with that in patients before spinal fusion. Results The amplitude of EMG of patients increases,median frequency decreases and symmetry property of two sides LE EMG drops as well two years after the fusion. Conclusion The change of EMG parameters two years after the fusion is consistent with the characteristics of atrophic muscle from disuse, which explains that back muscles in scoliosis patients show signs of atrophy two years after the fusion.更多还原