LR8 (Ququan, “Crooked Spring”) is the He-Sea Point point of the Liver Channel of Foot Jueyin Meridian. It is located on the medial aspect of the knee, in a depression found when the knee is flexed. It is located inferior to the medial epicondyle of the femur, posterior to the tibial condyle, in the depression at the medial end of the transverse popliteal crease, just anterior to the tendons of the semitendinosus and semimembranosus muscles. It clears Damp-Heat from the Lower Jiao, benefits the genitals, soothes the sinews, invigorates blood, and regulates the Liver.
On the medial aspect of the knee, in a depression found when the knee is flexed. It is located inferior to the medial epicondyle of the femur, posterior to the tibial condyle, in the depression at the medial end of the transverse popliteal crease, just anterior to the tendons of the semitendinosus and semimembranosus muscles.
Perpendicular insertion 1.0 to 1.5 cun, or obliquely in a proximal or distal direction. With the knee flexed, the needle is inserted between the tendons of semitendinosus and semimembranosus.
Clears Damp-Heat from the Lower Jiao, benefits the genitals, soothes the sinews, invigorates blood, and regulates the Liver.
Abdominal fullness, inability to urinate, impotence, uterine prolapse, penile pain, female abdominal masses (jia), feeling as if hot water is poured on the inner thigh, watery diarrhea (sui xie), infertility, lack of appetite, vaginal swelling, vaginal itching, discharge of green fluid like mallow soup, amenorrhea, mania, nosebleed, bleeding from the lower body, shortness of breath, lower abdominal pain radiating to the throat, seminal emission from sexual taxation, extreme body pain, bloody and purulent diarrhea, swelling of the scrotum, pain in the knee and patella, contracture of the sinews making flexion and extension difficult, coldness and pain in the knee and shin, inability to walk, headache, dizziness, eye pain, no sweating.
As the He-Sea and Water point of the Liver channel, Ququan is a primary point for clearing damp-heat from the lower jiao. It is classically indicated for a wide range of genital, urinary, and reproductive disorders in both men and women, including prolapse, pain, impotence, and difficult urination. Its location at the knee also makes it effective for local pain, stiffness, and sinew contracture, reflecting the Liver's function of governing the sinews.
Classical text; the translation was prepared with AI and is not clinical advice.
《黃帝內經》 Huángdì Nèijīng — The Yellow Emperor's Inner Canon, c. 2nd–1st c. BCE · lai-kuang-bing · Source: Wikisource ↗
狂而新發，未應如此者，先取曲泉左右動脈，及盛者見血，有頃已，不已，以法取之，灸骨骶二十壯The text records that for newly arising mania not of the kind described, one first takes the pulsing vessels at LR8 on both sides, bleeding where they are full; if it does not stop, one proceeds by the method and applies 20 moxa cones at the sacrum.
《神應經》 Shényìng Jīng — Classic of Divine Response, Chen Hui, 1425 · 丑足厥阴肝经 · Source: Wikisource ↗
曲泉 在膝内辅骨下，大筋上，小筋下陷中，屈膝取之It is located below the auxiliary bone on the inner side of the knee, above the large tendon and below the small tendon in a depression, and is found with the knee bent, according to this text.
《針灸大成》 Zhēnjiǔ Dàchéng — Great Compendium of Acupuncture & Moxibustion, 1601 · 卷十 · Source: Wikisource ↗
內外兩筋宛宛中，針六分，灸三壯According to this text, LR8 lies in the hollow between the inner and outer tendons, and is needled 6 fen with 3 moxa cones.
《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 ↗
曲泉㿉疝陰股痛，足膝脛冷久失精，兼治女子陰挺癢，少腹冷痛血瘕癥The text records in verse that LR8 was used for 'tui-shan' (scrotal swelling) with pain of the inner thigh, chronic coldness of feet, knees and shins, long-standing loss of essence, and also in women for genital prolapse and itching, cold pain of the lower abdomen and blood masses.
LR8 is one of 14 points on the Liver Channel of Foot Jueyin Meridian. Nearby points:
LR8 (Ququan) is located on the medial aspect of the knee, in a depression found when the knee is flexed. It is located inferior to the medial epicondyle of the femur, posterior to the tibial condyle, in the depression at the medial end of the transverse popliteal crease, just anterior to the tendons of the semitendinosus and semimembranosus muscles.
LR8 clears Damp-Heat from the Lower Jiao, benefits the genitals, soothes the sinews, invigorates blood, and regulates the Liver. Common clinical indications include abdominal fullness, inability to urinate, impotence, uterine prolapse, penile pain, female abdominal masses (jia), feeling as if hot water is poured on the inner thigh, watery diarrhea (sui xie), infertility, lack of appetite, vaginal swelling, vaginal itching, discharge of green fluid like mallow soup, amenorrhea, mania, nosebleed, bleeding from the lower body, shortness of breath, lower abdominal pain radiating to the throat, seminal emission from sexual taxation, extreme body pain, bloody and purulent diarrhea, swelling of the scrotum, pain in the knee and patella, contracture of the sinews making flexion and extension difficult, coldness and pain in the knee and shin, inability to walk, headache, dizziness, eye pain, no sweating.
Perpendicular insertion 1.0 to 1.5 cun, or obliquely in a proximal or distal direction. With the knee flexed, the needle is inserted between the tendons of semitendinosus and semimembranosus.
LR8 is a point on the Liver Channel of Foot Jueyin Meridian (Zú Juéyīn Gānjīng).