Meta-analysis of Pain Point Stimulation with Needle on Myofascial Pain Syndrome in Low Back
Objective To systematically evaluate the efficacy and safety of pain point stimulation with needle on myofascial pain syndrome(MPS)in low back.Methods By searching the Chinese database,including China Knowledge Network Infrastructure,Wanfang,and the English database Pub Med,the time was set from January 2010 to October 2022.Randomized controlled trials(RCTs)of pain point stimulation with needle on myofascial pain syndrome were retrieved.Three researchers independently screened literature,extracted data and assessed the risk of literature quality according to the inclusion and exclusion criteria.The VAS pain,lumbar function and total effective rate of pain point stimulation with needle on myofascial pain syndrome were analyzed by Review Manager 5.4 software.Subgroup analysis was performed according to different courses of treatment(2 weeks,3 weeks,4 weeks)and whether other treatments were combined.Results Eight RCTs were finally included,a total of 639 subjects.The results of Meta-analysis showed that the VAS pain index(MD=-l.84,95%CI:-2.39 to-1.30,P<0.000 01),lumbar function score(SMD=-1.34,95%CI:-2.40 to-0.28,P=0.01)and total effective rate(RR=1.27,95%CI:1.16 to 1.39,P<0.000 01)in the experimental group were better than those in the control group.Subgroup analysis showed that the long-term(4 weeks)analgesic effect of pain point stimulation with needle was better than that of short-term(2 weeks,3 weeks)treatment[MD(4 weeks)2.71>MD(3 weeks)2.09>MD(2 weeks)0.97,P<0.000 01].Regardless of whether other treatments were combined,the effect of pain point stimulation with needle on pain relief(MD=-1.84,95%CI:-2.39 to-1.30,P=0.001)was better than that of the control group.Conclusion According to the summary and analysis of the currently published literature,pain point stimulation with needle can effectively relieve the pain symptoms and improve the waist function in patients with myofascial pain syndrome in low back.Whether in combination with other treatments or alone intervention,it can significantly improve the symptoms,and the effect is better than traditional oral medicine,massage,electrotherapy,etc.,while subcutaneous hemorrhage is a common adverse reaction of acupuncture.However,the quality of the study is low,and this conclusion needs to be further verified by more high-quality randomized controlled trials.
AcupuncturePain pointMyofascial pain syndrome in low backRandomized controlled trial