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TB-9 Four Rivers
四渎 〔四瀆〕sì dú
Channel: TB, Hand Lesser Yáng (shào yáng) Triple Burner Channel
Modern location: An acupoint located on the posterior aspect of the forearm, 5 cùn distal to the tip of the olecranon, midway between the radius and the ulna.
Classic location: Five cùn in front of the elbow, in the depression on the outer side. (Zhēn Jiǔ Dà Chéng)
Local anatomy: See TB-7.
Action: Courses the channels and quickens the network vessels; regulates the waterways; disinhibits the throat and opens the orifices.
Modern indications: Deafness; painful swollen throat;
Classic indications: Blocked sensation in the throat.
Needle stimulus: Needling: 0.5‒1.0 cùn perpendicular insertion. Moxa: 3 cones; pole 5‒10 min.
Needle sensation: Distension and numbness, spreading toward the hand or elbow.
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