He-sea (water) point.

bubble_chart Etymology

"Yin" (陰), medial side; "gu" (谷), valley, indicating a depression. The point is located in the medial depression of popliteal fossa, opposite Weiyang (BL39) on lateral side.

bubble_chart Location

Yingu (KI10) acupoint
(quoted from "Meridians and Acupoints")

• Lingshu‧Benshu: "Behind the supporting bone, below the large tendon and above the small tendon, palpable when pressed, obtained by flexing knee";
• Xunjing Kaoxue Bian: "When the knee is flexed, there are two pointed depressions: the upper one is Ququan (LR8), and the lower one is Yingu (KI10)".

bubble_chart Anatomy

• Muscles: laterally, the tendon of semitendinosus muscle; medially, the tendon of semimembranosus muscle; deep layer, medial head of gastrocnemius muscle.
• Nerve: cutaneous branch of obturator nerve.
• Vessels: medial superior genicular artery and vein.

bubble_chart Manipulation

Perpendicular insertion 0.5～1.5 cun. Moxibustion with moxa cone 3 to 5 times, moxibustion with moxa stick for 10 to 15 minutes.

bubble_chart Efficacy

Regulate lower jiao, relieve distension and fullness.

• Classical: abnormal uterine bleeding, leukorrhea, abdominal distension and fullness with difficulty breathing, dark urine, difficulty urinating, impotence, lower abdominal tension radiating to genitals and inner thigh, damp itching of scrotum, soreness in popliteal fossa.
• Modern: gastric spasm, cystitis, vaginal vaginitis.

bubble_chart Combinations

• Dark or reddish urine: Yingu (KI10), Taixi (KI3), Shenshu (BL23), Qihai (CV6), Pangguangshu (BL28), Guanyuan (CV4).
• Cholera: Yingu (KI10), Zusanli (ST36).
• ischuria: Guanyuan (CV4), Yingu (KI10).
• Excessive leucorrhea, genital itching, scrotal eczema: Guanyuan (CV4), Shangliao (BL31), Yingu (KI10).