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Alternate names: 漏阴 lòu yīn, Leaky Yin; 阴蹻 yīn qiāo, Yin Springing; 阴跷 yīn qiāo, Yin Springing

Channel: KI, foot lesser yīn (shào yīn) kidney channel; shared point on the yīn springing (yīn qiāo) vessel

Modern location: An acupoint located on the medial aspect of the foot, about 1 cùn inferior to the lower border of the medial malleolus, inferior to the tibialis posterior tendon.

Classical location: Four fēn below the inner anklebone, in the depression bordered by sinews in front and behind, the anklebone above, and the soft bone below. From The Great Compendium of Acupuncture and Moxibustion (针灸大成 zhēn jiǔ dà chéng)

Local anatomy: Posteroinferiorly, the posterior tibial artery and vein. The medial crural cutaneous nerve; deeper, the tibial nerve.

Action: Frees the channels and harmonizes provisioning; drains fire and courses qì; clears the spirit-mind; disinhibits the throat.

Modern indications: Menstrual irregularities; vaginal discharge; yīn protrusion (prolapse of the uterus); frequent urination; dribbling urinary block; constipation; painful dry throat; epilepsy; insomnia.

Classical indications: Eye pain; abdominal pain; nocturnal epilepsy; sorrowfulness; no desire to eat; sudden mounting (shàn) and smaller abdominal pain; yellow urine; rough dribbling urination; oppression in the chest; stomach reflux; rumbling intestines; constipation; intestinal wind bleeding; difficult delivery; postpartum abdominal pain; persistent flow of lochia; retention of the placenta; swollen and itchy pudendum.

Needle stimulus: Needling: 0.3‒0.5 cùn perpendicular insertion. Moxa: 3 cones; pole 5‒10 min.

Point groups: Confluence (bā mài jiāo huì) point of the yīn springing vessel (yīn qiāo mài).

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