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SP-9 Yīn Mound Spring
阴陵泉 〔陰陵泉〕 yīn líng quán
Alternate names: 阴之陵泉 yīn zhī líng quán, Yin's Mound Spring; 足太阴所入 zú tài yīn suǒ rù,
Channel: SP, foot greater yīn (tài yīn) spleen channel
Modern location: An acupoint located on the medial aspect of the lower leg, at the inferior border of the medial condyle of the tibia, between the posterior edge of the tibia and the anterior edge of the gastrocnemius muscle.
Classical location: Below the knee and above Earth’s Crux (SP-8), at the depression at the end of the crease when the knee is flexed. From
Local anatomy: Anteriorly, the great saphenous vein, the genu suprema artery; deeper, the posterior tibial artery and vein. Superficially, the medial crural cutaneous nerve; deeper, the tibial nerve.
Action: Warms and moves the central burner; regulates the spleen; transforms dampness; regulates the waterways; dispels wind-cold.
Modern indications: Abdominal distension; diarrhea; water swelling; jaundice; inhibited urination or urinary incontinence; knee pain.
Classical indications: Cold in the abdomen; qì distension in the abdomen;
Needle stimulus: Needling: 0.5‒1.0 cùn perpendicular insertion. Moxa: 3 cones; pole 3‒5 min.
Needle sensation: Localized twinge and distension, sometimes spreading downward and outward.
Point groups: Uniting (hé) (water) point.
Point name meaning:
- 阴 yīn: yīn, the complement of yáng
- 陵 líng: mound, hill, tomb
- 泉 quán: spring (source of water); name of an ancient coin
In the landscape of the body, the knee can be said to resemble a hill or mound. Since mound spring
on the yīn aspect of the leg is called Yīn Mound Spring. (See also