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ST-42 Surging Yáng

冲阳 〔衝陽〕chōng yáng

Alternate names: 跌阳 diē yáng, Unrestrained Yang; 会骨 huì gǔ, Meeting Bones; 会屈 huì qū, Meeting Bend; 会涌 huì yǒng, Meeting Gush; 会原 huì yuán, Meeting Source; 足阳明所过 zú yáng míng suǒ guò,

Channel: ST, Foot Yáng Brightness (yáng míng) Stomach Channel

Modern location: An acupoint located on the dorsal aspect of the foot, about 1.5 cùn distal to ST-41, on the medial side of the common extensor tendon that attaches to the second toe.

Classic location: Going down from Ravine Divide (ST-41), [the point is] at a depression on the high point of the instep, where a pulse can be felt. (Yī Zōng Jīn Jiàn)

Local anatomy: The dorsal artery and vein of the foot, the dorsal venous network of the foot. Superficially, the medial dorsal cutaneous nerve of the foot derived from the superficial peroneal nerve; deeper, the deep peroneal nerve.

Action: Harmonizes the stomach and fortifies the spleen; settles fright and quiets the spirit.

Modern indications: Deviated mouth; toothache; facial swelling; stomach pain; mania and withdrawal; epilepsy; wilting (wěi) of the feet.

Classic indications: Swelling of the head and face; aching among the upper teeth; abdominal swelling; mania and withdrawal; malarial disease; wind heavy-headedness; pain in the forehead; abdominal distension with no desire to eat.

Needle stimulus: Needling: 0.3 cùn oblique or perpendicular insertion. Avoid the artery. Moxa: 3 cones; pole 5‒10 min.

Point groups: Source point (yuán xué).

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