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Alternate names: BL-39

Channel: BL, Foot Greater Yáng (tài yáng) Bladder Channel

Modern location: An acupoint located on the upper back, level with the inferior border of the spinous process of the fifth thoracic vertebra, 3 cùn lateral to the midline.

Classic location: In the depression three cùn either side of the spine, below the fifth vertebra. The point is found in straight sitting posture. (Zhēn Jiǔ Dà Chéng)

Local anatomy: Posterior branches of the intercostal artery and vein, the descending branch of the transverse cervical artery. Medial cutaneous branches of the posterior rami of the 4th and 5th thoracic nerves; deeper, their lateral branches and the dorsal scapular nerve.

Action: Loosens the chest and rectifies qì; suppresses cough and stabilizes panting; soothes the sinews and quickens the network vessels.

Modern indications: Panting; cough; oppression in the chest; painful stiffness of the back.

Classic indications: Fullness in the chest and abdomen.

Needle stimulus: Needling: 0.5 cùn oblique insertion toward corner of the shoulder blade. Moxa: 7‒15 cones; pole 5‒10 min.

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