SP9 (Yīnlíngquán, “Yin Mound Spring”) is the He-Sea Point point of the Spleen Channel Meridian. It is located on the medial aspect of the lower leg, in the depression on the posterior and inferior border of the medial condyle of the tibia. This point is found by tracing the medial border of the tibia superiorly until the finger falls into a distinct depression just below the knee joint. It resolves dampness, opens and moves the water passages, benefits the lower jiao, relieves pain.
On the medial aspect of the lower leg, in the depression on the posterior and inferior border of the medial condyle of the tibia. This point is found by tracing the medial border of the tibia superiorly until the finger falls into a distinct depression just below the knee joint.
Perpendicular insertion 1.0 to 2.0 cun.
Resolves dampness, opens and moves the water passages, benefits the lower jiao, relieves pain.
Abdominal distension, inability to lie down due to abdominal fullness, water swelling, diarrhea with undigested food, sudden diarrhea after eating, cholera, difficulty with urination, urinary incontinence, enuresis, painful urination (Qi Lin), pain in the genitals, pain in the lower abdomen, hardness and pain in the lower abdomen, hernia, cold and heat that is not regulated, pain in the knee, inability to bend and extend the knee, heat in the chest, pain in the heart and abdomen, heat disease with pain around the navel and chest fullness.
As the He-Sea and Water point of the Spleen channel, Yinlingquan is the primary point for resolving dampness anywhere in the body. It is classically indicated for edema, abdominal distension, and urinary and digestive disturbances characterized by dampness, such as diarrhea and difficult urination. Its location also makes it a key local point for pain and restricted movement of the knee.
Classical text; the translation was prepared with AI and is not clinical advice.
《子午流注針經》 Zǐwǔ Liúzhù Zhēnjīng — Needling Classic of the Midday-Midnight Flow, Yan Mingguang, c. 1153 · 卷下 · 針經井滎歌訣 · Source: jicheng.tw ↗
陰陵泉穴脾之合，腹堅喘逆身難臥，
霍亂疝瘕及腰疼，小便不利針時過The text, in verse, records SP9 as the he-sea point of the spleen, needled for hard abdomen with wheezing and difficulty lying down, sudden turmoil (huoluan), hernia masses, low back pain and difficult urination.
《類經圖翼》 Lèijīng Túyì — Illustrated Wings to the Classified Canon, Zhang Jiebin, 1624 · 卷六 · 經絡（四） · 足太陰脾經穴 · Source: jicheng.tw ↗
陰陵泉 在膝下內輔骨下陷中，伸足取之，或曲膝取之，與少陽經陽陵泉內外相對。 一曰稍高一寸According to this text, SP9 lies below the knee in the depression below the inner condyle, located with the leg extended or the knee bent, opposite Yanglingquan (GB34) of the Shaoyang channel; one account places it 1 cun higher.
《醫學入門》 Yīxué Rùmén — Introduction to Medicine, Li Chan, 1575 · 经穴起止 · Source: Wikisource ↗
阴陵泉膝下内侧辅骨下陷中，曲膝取之。 针入五分，禁灸。 主心下满，寒中腹胀胁满，腹中水气，喘逆，霍乱暴泄，足痛腰痛，小腹坚急，小便不利； 又治遗尿失禁，气淋According to this text, SP9 lies below the knee in the depression below the inner condyle, located with the knee bent; needle 0.5 cun and moxibustion is stated to be prohibited. It was used for fullness below the heart, cold in the middle with distension of abdomen and ribs, water qi in the abdomen, wheezing, sudden turmoil with diarrhoea, foot and back pain, hard tense lower abdomen, difficult urination, and also enuresis, incontinence and qi-lin.
《醫宗金鑑·刺灸心法要訣》 Yīzōng Jīnjiàn · Cìjiǔ Xīnfǎ Yàojué — Golden Mirror of Medicine: Essential Teachings on Acupuncture & Moxibustion, Wu Qian et al., 1742 · 卷七 · 足部主病針灸要穴歌 · Source: jicheng.tw ↗
陰陵泉穴，主治脅腹脹滿，陰痛，足膝紅腫，小便不通，小便失禁不覺，下部等證。 針五分，留七呼，灸三壯The text records that SP9 was used for distension and fullness of the ribs and abdomen, genital pain, red swelling of the feet and knees, blocked urination, unnoticed urinary incontinence and other disorders of the lower body; needle 0.5 cun, retain seven breaths, moxibustion 3 cones.
SP9 is one of 21 points on the Spleen Channel Meridian. Nearby points:
SP9 (Yīnlíngquán) is located on the medial aspect of the lower leg, in the depression on the posterior and inferior border of the medial condyle of the tibia. This point is found by tracing the medial border of the tibia superiorly until the finger falls into a distinct depression just below the knee joint.
SP9 resolves dampness, opens and moves the water passages, benefits the lower jiao, relieves pain. Common clinical indications include abdominal distension, inability to lie down due to abdominal fullness, water swelling, diarrhea with undigested food, sudden diarrhea after eating, cholera, difficulty with urination, urinary incontinence, enuresis, painful urination (Qi Lin), pain in the genitals, pain in the lower abdomen, hardness and pain in the lower abdomen, hernia, cold and heat that is not regulated, pain in the knee, inability to bend and extend the knee, heat in the chest, pain in the heart and abdomen, heat disease with pain around the navel and chest fullness.
Perpendicular insertion 1.0 to 2.0 cun.
SP9 is a point on the Spleen Channel Meridian (Zú Tài Yīn Pí Jīng).