Efficacy of acupuncture for sciatica: study protocol for a randomized controlled pilot trial

BackgroundAcupuncture is widely used for pain diseases while evidence of its efficacy for sciatica is insufficient. We aim to explore the feasibility and efficacy of acupuncture with different acupoint selecting strategies for sciatica induced by lumbar disc herniation.MethodsThis is a multicenter, three-arm, patient-assessor-blinded randomized controlled pilot trial. Ninety patients will be assigned randomly into 3 groups including disease-affected meridians (DAM) group, non-affected meridians (NAM) group, and sham acupuncture (SA) group in a 1:1:1 ratio. The trial involves a 4-week treatment along with follow-up for 22weeks. The primary outcome is the change of leg pain intensity measured by the visual analogue scale (VAS) from baseline to week 4 after randomization. Secondary outcomes include functional status, back pain intensity, and quality of life. Adverse events will also be recorded.DiscussionThe results will inspire the optimal acupuncture strategy for sciatica and help establish a better design as well as power calculation for a full-scale study.Trial registrationChiCTR2000030680 (Chinese Clinical Trial Registry, http://www.chictr.org.cn, registered on 9 March 2020).