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

Modern location: An acupoint located on the posterior aspect of the lower leg, 2 cùn inferior to the center of the popliteal crease, between the two heads of the gastrocnemius muscle.

Classical location: Three cùn below the crease of the knee. From The Great Compendium of Acupuncture and Moxibustion (针灸大成 zhēn jiǔ dà chéng)

Local anatomy: The small saphenous vein; deeper, the popliteal artery and vein. The medial sural cutaneous nerve; deeper, the tibial nerve.

Action: Strengthens the lumbus and boosts the kidney; soothes the sinews and quickens the network vessels; regulates the penetrating and controlling vessels.

Modern indications: Back pain; wilting-impediment (wěi bì) of the lower limbs; mounting qì (shàn qì, inguinal hernia) of the lower limbs; flooding and spotting.

Classical indications: Heat in the inner thigh; flooding and spotting and vaginal discharge; mounting (shàn) pain; fulminant genital pain; abdominal pain.

Needle stimulus: Needling: 0.7‒1.0 cùn perpendicular insertion. Moxa: 3‒5 cones; pole 5‒10 min.

Point name meaning:

• 合 hé: to unite, to meet
• 阳 yáng: yáng, the complement of yīn

This point is located just below the uniting (hé) point of the bladder channel. It is furthermore situated just below the area of the popliteal crease, where an internal branch of the bladder channel unites with the main channel. The character 合 (hé), meaning union, reflects both these facts, while 阳 yáng can be taken as a representation of the bladder, which is a yáng organ. See acupoint names: origins, meanings, and translations.

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