BL31 (Shangliao, “Upper Bone-Hole”) is an acupuncture point on the Bladder Meridian. BL31 is in the 1st posterior sacral foramen, medial to the posterior superior iliac spine. It regulates menstruation, stops leucorrhea, benefits urination, strengthens the back and legs.
BL31 is in the 1st posterior sacral foramen, medial to the posterior superior iliac spine.
Perpendicular insertion 0.8-1.2 cun.
Regulates menstruation, stops leucorrhea, benefits urination, strengthens the back and legs.
Irregular menstruation, leucorrhea, dysuria, enuresis, low back pain, muscular atrophy, pain, numbness and weakness of the lower extremities.
Shangliao is one of the eight 'Bone-Hole' points (Ba Liao), which are highly effective for gynecological, urinary, and lower back issues due to their direct access to the sacral nerve plexus. It is particularly used for regulating menstruation, stopping leucorrhea, and benefiting urination, especially for conditions like dysmenorrhea, irregular menstruation, and difficult urination. It is often combined with other Ba Liao points for a stronger effect on the lower jiao.
BL31 is one of 67 points on the Bladder Meridian. Nearby points:
BL31 is in the 1st posterior sacral foramen, medial to the posterior superior iliac spine.
BL31 regulates menstruation, stops leucorrhea, benefits urination, strengthens the back and legs. Common clinical indications include irregular menstruation, leucorrhea, dysuria, enuresis, low back pain, muscular atrophy, pain, numbness and weakness of the lower extremities.
Perpendicular insertion 0.8-1.2 cun. Caution: ⚠ Pregnancy: avoid — may stimulate uterine contraction (miscarriage / early-labour risk). ⚠ Reduce depth in thin patients — avoid deep perpendicular insertion.
BL31 is a point on the Bladder Meridian (Zú Tài Yáng Páng Guāng Jīng).