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Channel: SI, hand greater yáng (tài yáng) small intestine channel

Modern location: An acupoint located on the dorsal aspect of the wrist, in the depression on the radial side of the ulnar styloid process, about 1.5 cùn proximal to SI-5.

Classical location: In a hole on the protuberant bone of the wrist, in a depression one cùn behind the wrist. From The Systematic Classic of Acupuncture and Moxibustion (针灸甲乙经 zhēn jiǔ jiǎ yǐ jīng)

Local anatomy: The terminal branches of the posterior interosseous artery and vein, the dorsal venous network of the wrist. The anastomotic branches of the posterior antebrachial cutaneous and dorsal branch of the ulnar nerve.

Action: Frees the channels and quickens the network vessels; brightens the eyes.

Modern indications: Unclear vision; pain in the shoulder, arm, and elbow.

Classical indications: Lumbar pain preventing turning over; hypertonicity of the sinews and impediment (bì) of the foot; redness and swelling of the outer face of the elbow.

Needle stimulus: Needling: 0.3‒0.5 cùn perpendicular insertion. Moxa: 3 cones; pole 5‒20 min.

Point groups: Cleft point (xī xué) of the small intestine channel.

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