肌骨超声引导下小针刀技术对腰背肌筋膜疼痛综合征患者疼痛程度、肌电信号及腰部活动范围的影响

目的：探讨肌骨超声引导下小针刀技术对腰背肌筋膜疼痛综合征（MPS）患者疼痛程度、肌电信号及腰部活动范围的影响。方法：选取2020年6月-2021年7月期间本院收治的腰背MPS患者78例，按随机数表法分成2组（研究组和对照组，每组39例）。对照组给予传统针刀治疗，研究组给予肌骨超声引导下小针刀技术。对比2组患者治疗后4周疼痛程度、肌电信号、腰部活动范围。结果：治疗后，两组VAS评分均低于治疗前（P＜0.05），且研究组VAS评分低于对照组（P＜0.05）；治疗后，研究组腰背肌等长收缩试验过程中腰部核心肌中位频率高于治疗前（P＜0.05），且高于对照组（P＜0.05）；治疗后，研究组腰部活动范围大于治疗前（P＜0.05），且大于对照组（P＜0.05）。结论：肌骨超声引导下小针刀技术能显著减轻腰背MPS患者疼痛程度，改善肌电信号、腰部活动范围。

Effects of small needle knife technique guided by musculoskeletal ultrasound on the pain degree, EMG signal and lumbar range of motion in patients with lumbodorsal myofascial pain syndrome

Objective: To investigate the effects of small needle knife technique guided by musculoskeletal ultrasound on the pain degree, EMG signal and lumbar range of motion in patients with lumbodorsal myofascial pain syndrome (MPS). Methods: Seventy-eight patients with lumbodorsal MPS in our hospital from June 2020 to July 2021 were selected and divided into two groups (study group and control group, with 39 cases in each group) according to random number table. The control group was treated with traditional acupotomy, and the study group was treated with small needle knife technique guided by musculoskeletal ultrasound. The degree of pain, EMG signal and lumbar range of motion 4 weeks after treatment were compared between the two groups. Results: After treatment, the VAS scores of the two groups were lower than before treatment (P < 0.05), and the VAS score of the study group was lower than that of the control group (P < 0.05). After treatment, the median frequency of lumbar core muscle during isometric contraction test in the study group was higher than that before treatment (P < 0.05), and higher than that in the control group (P < 0.05). After treatment, the lumbar range of motion in the study group was larger than that before treatment (P < 0.05), and larger than that in the control group (P < 0.05). Conclusion: The small needle knife technique guided by musculoskeletal ultrasound can significantly reduce the pain degree, improve the EMG signal and lumbar range of motion in patients with lumbodorsal MPS.