Intersecting point: foot taiyin, jueyin, and shaoyin.

bubble_chart Etymology

"Sanyin" (三陰) refers to the three yin meridians (foot taiyin spleen meridian (SP), foot jueyin liver meridian (LR), foot shaoyin kidney meridian (KI)); "jiao" (交), intersection. The acupoint is the intersection of three yin meridians of foot, hence the name.

bubble_chart Location

Sanyinjiao (SP6) acupoint
(quoted from "Meridians and Acupoints")

On the medial side of \lower leg, 3 cun above the tip of medial malleolus, in the depression behind the medial border of tibia.

• Zhenjiu Jiayi Jing: "Three cun above medial malleolus, in the depression below the bone";
• Yixue Rumen: "Posterior to the bone, anterior to the tendon"

bubble_chart Anatomy

• Muscles: between the posterior edge of tibia and soleus muscle, flexor digitorum longus in the deep layer.
• Nerve: medial cutaneous nerve of lower leg (saphenous nerve), tibial nerve deep behind.
• Vessels: great saphenous vein, posterior tibial artery and vein in the deep layer.

bubble_chart Manipulation

Perpendicular insertion 0.5～1.5 cun. Pregnant women should use with caution.

bubble_chart Efficacy

Tonify spleen earth, aid digestion, relieve qi stagnation, dredge lower jiao, regulate blood chamber and essence palace, dispel wind-dampness from meridians and collaterals.

• Classical: Irregular menstrual, loss of appetite, abdominal distension and intestinal borborygmus, myopia, ptosis of upper eyelid, blepharitis, spleen-stomach weakness, heart and abdominal distension and fullness, intestinal borborygmus with loose stool, hemorrhoids, indigestion, vomiting water after eating, body heaviness due to spleen disease, inability to lift limbs, abdominal masses in women, menorrhagia and metrostaxis, leukorrhea, amenorrhea, infertility, fetal movement during pregnancy, difficult delivery, stillbirth, retained placenta, postpartum lochia stagnation, postpartum dizziness, nocturnal emission, penile pain, difficulty in urination, enuresis, turbid urine, hernia pain, foot flaccidity, heat in the sole, Bi-syndrome pain, chronic shank ulcer, beriberi, infantile fright, cold extremities, Impaired movement due to dampness-induced Bi syndrome, pain in the inner knee, shin pain preventing prolonged standing, sadness, depressive psychosis, pharyngitis, fullness in neck, lung distension, lung distension with phlegm and cough preventing lying down.
• Modern: genitourinary diseases, uterine hemorrhage, leukorrhea, orchitis, acute and chronic nephritis, ischuria, gonorrhea, intestinal hernia pain, impotence, seminal emission, enuresis, acute and chronic enteritis, thromboangiitis obliterans, hypertension, insomnia, eczema, urticaria, itchy skin, diabetes, neurosis, toxic indigestion, prolonged labor.

Treatment of influenza, enterovirus, and various viral colds, Chinese medicine is more refined, non-toxic, and effective than Western medicine

bubble_chart Combinations

• Lienteric diarrhea: Sanyinjiao (SP6), Yinlingquan (SP9).
• Turbid urine and seminal emission: Sanyinjiao (SP6), Qihai (CV6).
• Acute enteritis in children: Sanyinjiao (SP6), Tianshu (ST25), Hegu (LI4).
• Thromboangiitis obliterans: Sanyinjiao (SP6), Zhongwan (CV12), Neiguan (PC6), Zusanli ( ST36).
• Ischuria (damp-heat pouring downward): Sanyinjiao (SP6), Yinlingquan (SP9), Pangguangshu (BL28), Zhongji(CV3).