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SP-8 Earth’s Crux

地机 〔地機〕 dì jī

Alternate names: 地箕 dì jī, Earth Winnower; 脾舍 pí shè, Spleen Abode

Channel: SP, foot greater yīn (tài yīn) spleen channel

Modern location: An acupoint located on the medial aspect of the lower leg, slightly behind the posterior edge of the tibia, 3 cùn inferior to SP-9 on the line connecting the medial malleolus and SP-9.

Classical location: In the depression by the bone five cùn above Leaking Valley (SP-7) and five cùn below the knee on the inner side. The point is found with the leg outstretched. From The Great Compendium of Acupuncture and Moxibustion (针灸大成 zhēn jiǔ dà chéng)

Local anatomy: Anteriorly, the great saphenous vein and branch of the genu suprema artery; deeper, the posterior tibial artery and vein. Superficially, the medial crural cutaneous nerve; deeper, in the posterior aspect, the tibial nerve.

Action: Harmonizes the spleen and rectifies the blood; harmonizes the uterus.

Modern indications: Abdominal distension; diarrhea; inhibited urination; water swelling; menstrual irregularities; menstrual pain; seminal emission.

Classical indications: Qì distension of the abdomen and rib-side; no desire to eat; inhibited urination; visceral impediment (zàng bì); hemorrhoids; concretions and conglomerations in women.

Needle stimulus: Needling: 0.3‒1.0 cùn perpendicular insertion. Moxa: 3 cones; pole 5‒10 min.

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

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