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Alternate names: 扁骨 biǎn gǔ, Flat Bone; 扁肩 biǎn jiān, Flat Shoulder; 肩尖 jiān jiān, Shoulder Tip; 偏骨 piān gǔ, End Bone; 髃骨 yú gǔ, Collarbone; 中肩井 zhōng jiān jǐng, Central Shoulder Well

Channel: LI, Hand Yáng Brightness (yáng míng) Large Intestine Channel

Modern location: An acupoint located on the lateral aspect of the shoulder, inferior to the acromioclavicular articulation, between the anterior and medial portions of the deltoid muscle, in the most anterior of the depressions that form when the arm is abducted.

Classic location: In the depression between the sinew and bone at the end of the humerus where it meets the shoulder bone. A hollow appears at the point when the arm is lifted. (Zhēn Jiǔ Dà Chéng)

Local anatomy: The posterior circumflex artery and vein. The lateral supraclavicular nerve and axillary nerve.

Action: Courses wind and quickens the network vessels; harmonizes qì and blood; disinhibits the joints; dispels evils and resolves heat.

Modern indications: Hypertonicity, pain, or paralysis of the shoulder and arm; stiff neck and nape; dormant papules; scrofula.

Classic indications: Heat in the shoulder; impediment (bì) of the fingers; hemilateral wind and hemiplegia; thin weak arms; shoulder wind; toothache; wind and dampness contending in both shoulders; seminal discharge due to taxation damage.

Needle stimulus: Needling: 0.6‒1.2 cùn downward oblique insertion. Moxa: 7‒14 cones; pole 5‒10 min.

Needle sensation: Distension and numbness, sometimes extending to the elbow.

Point groups: Intersection point (jiāo huì xué) of the large intestine channel and yáng springing vessel (yáng qiāo mài).

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