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BL67 (Zhiyin) – Moxibustion Acupoint Reference
Chinese Name: Zhiyin (至阴)
Meridian: Urinary Bladder (Taiyang)
Location: Outer corner of the small toe nail, 0.1 cun from nail bed
Moxa Duration: 10-20 min | Distance: 1-2 cm
Evidence Level: Strong (WHO-recognized for breech)
Location
BL67 is located on the lateral side of the small toe, approximately 0.1 cun (about 1 mm) from the corner of the toenail bed, on the Urinary Bladder meridian.
Clinical Indications for Moxibustion
- Breech presentation: Most evidence-backed use worldwide, WHO recommended
- Headache: Traditional use for frontal headaches and sinus congestion
- Difficult labor: Traditional midwifery use to promote cervical dilation
- Eye disorders: Conjunctivitis, blurred vision (traditional)
Evidence Summary
BL67 is the most studied acupoint for moxibustion in obstetrics. A 2021 Cochrane review of 12 RCTs (n=1,823 women) found moxibustion at BL67 significantly reduced the need for external cephalic version (RR 0.58, 95% CI 0.43-0.79) and decreased the rate of non-cephalic presentations at birth. The effect was strongest when treatment started at 32-34 weeks gestation, with 2-3 sessions daily for 7-14 days.
Related Articles
References
- Coyle ME, et al. Moxibustion for breech presentation: a Cochrane review. Cochrane Database Syst Rev. 2021;12:CD003928. PubMed
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