腓肠肌表面肌电图评估腰椎椎间盘突出症手术效果

Evaluation operation effect of lumbar disc herniation by gastrocnemius muscle surface electromyography

目的探讨利用腓肠肌表面肌电图评价腰椎椎间盘突出症手术效果。方法本组患者38例,所有患者术前、术后7 d接受腓肠肌表面肌电图检查。结果 38个受试者接受手术治疗后,35例症状不同程度的缓解,3例症状无缓解或加重。38例患者手术前各节段健侧与患侧平均肌电图(average electromyography,aEMG)波幅、中位频率斜率(median frequency,MFs)的差异有统计学意义(P<0.05),手术后各节段健侧与患侧aEMG波幅的差异无统计学意义(P>0.05),各节段健侧与患侧MFs相比差异有统计学意义(P<0.05);手术前、后各节段患侧aEMG幅值、MFs值变化有统计学意义(P<0.05)。结论腓肠肌表面肌电图可作为腰椎椎间盘突出症手术疗效评定的客观依据,具有较好的临床应用价值。

Objective To Evaluat operation effect of lumbar disc herniation by gastrocnemius muscle surface electromyography.Methods A total of 38 patients with unilateral lumbar disc herniation were involved in this research.All patients were treated with gastrocnemius contraction test on admission and at 7 d after surgical treatment to record the median frequency slope （MFs） and average electromyography （aEMG） amplitude of gastrocnemius （both affected side and unaffected side）.Results All the 38 subjects underwent surgery,35 cases symptomatic relief on varying degrees,3 cases with no symptomatic relief or symptomatic exacerbation.Before operation,the difference of both MFs and aEMG amplitude between affected side and unaffected side were statistically significant （P 〈 0.05）.After operation,the difference of aEMG amplitude between affected side and unaffected side was not statistically significant （P 〉 0.05）,the difference of MFs between affected side and unaffected side was statistically significant （P 〈 0.05）.On the affected side,the differences of both MFs and aEMG amplitude between pre-and post-operation were statistically significant （P 〈 0.05）.Conclusion The gastrocnemius muscle surface electromyography can be used as an objective basis for evaluating operation curative effect of lumbar disc herniation,and with better clinical value.