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Alternate names: BL-48

Channel: BL, foot greater yáng (tài yáng) bladder channel

Modern location: An acupoint located on the buttocks, level with the second sacral foramen, 3 cùn lateral to the midline.

Classical location: In the depression three cùn either side of the spine, below the nineteenth vertebra. The point is located in prostrate posture. From The Great Compendium of Acupuncture and Moxibustion (针灸大成 zhēn jiǔ dà chéng)

Local anatomy: The superior gluteal artery and vein. Superior cluneal nerves; deeper, the superior gluteal nerve.

Action: Strengthens the lumbar vertebrae; frees bowel qì; disinhibits the lower burner.

Modern indications: Rumbling intestines; abdominal distension; constipation; dribbling urinary block; back pain.

Classical indications: Urinary stoppage; abdominal pain.

Needle stimulus: Needling: 0.7‒1.3 cùn perpendicular insertion. Moxa: 7‒15 cones; pole 10‒30 min.

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