Anatomical structures and needling method of the back-shu points BL18, BL20, and BL22 related to gastrointestinal organs: A PRISMA-compliant systematic review of acupoints and exploratory mechanism analysis
Cho Y, Han Y, Kim Y, Han S, Oh K, Chae H, Hongmin C, Ryu M · Medicine · 2022 October 28
DOI 10.1097/MD.0000000000029878
Objective
Acupuncture treatment on back-shu points (BSPs) has received attention owing its ability to control the function of visceral organs. We aimed to conduct a systematic review to provide detailed information on the effectiveness and safety of BL18, BL20, and BL22 on the digestive system in terms of soft tissue and anatomical structure and assist in the appropriate application.
Conclusions
This study provides guidance on applying needles in terms of anatomical structures to yield therapeutic responses. However, few studies have assessed how to effectively stimulate BSP to trigger digestive effects and their mechanisms. Additional studies on the relationship between BSP and the digestive system are needed to use these acupoints for digestive diseases.
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Insights
Acupuncture covering the depth ranges for BL18, BL20, and BL22 and their targeting of various tissues potentially alleviates sympathetic nerve issues and ischemia with assistance of the diaphragm.
Review analyzed 115 articles on needling depth and angle for back-shu acupuncture points in GI diseases. Key findings include the depth range for BL18, BL20, and BL22 points, their targeting of muscles, nerves, and diaphragmatic tissues, and the potential for acupuncture to alleviate sympathetic nerve overexcitability and ischemia while emphasizing the diaphragm's role in digestive function.
