LOCATION
Ququan is located 1 cun anterior to KI 10, just superior to the medial end of the popliteal crease, in the depression anterior to the tendons of m. semitendinosus and m. semimembranosus.
Features
He/sea point and water point.
Body Inches (cun)
Each person has his/her own personal body inches.
One cun is equal to the width of the Knuckle of the thumb.
Nerves, vascular
The saphenous nerve, the uppermost artery of the knee, the great saphenous vein.
Indication
Hysteroptosis，vaginitis，prostatitis，spermatorrheaimpotence，incomplete uterine contractions，irregular menstruation，dysmenorrhea；urinary retention，urinary retention，nephritis；dizziness eyes pain；diarrheadiarrhea；knee and soft tissue disorders，nosebleed. Tonify LV Yin and Blood, clears excess heat patterns. Genital issues related to damp-heat – pain/swelling, retention of urine, cystitis, prostatitis, ovarian cysts. Tonify Yin from mental, physical, emotional strain. Medial knee pain. Tong CV/Tam Healing System: Knee problems, even if on the lateral side of the knee, also useful for abdominal pain, urination issues, groin issues (itch/pain).
Combinations
Umbilical pain：CV 09 & LR 08 & LR 04.
Erection a.：LR 08 & GV 20 & CV 06.
Erection b.：LR 08 & KI 06 & LR 01.
Colic：LR 12 &LR 08 & SP 06.
Difficulty in urination a.：LR 08 & CV 03 & SP 09.
Difficulty in urination b.，pains in the penis：LR 08 & LR 02.
Homophilia：LR 10 & LR 08.
Knee patellapain and swelling：LR 08 & EX-LE5 & ST 34 & SP 10.
Good for urinogenital problems.
Best point for damp heat on Liver channel.
Although emphasized by some practitioners as a point to tonify the Liver yin and blood, Ququan (mother) is primarily used to clear damp-heat from the lower jiao and to resolve blood stasis in the uterus.
穴位
在膝內側，屈膝，當膝關節內側面橫紋內側端隱。
特點
合（水）穴。
同身寸
針灸取穴比量法。出自《千金要方》。
是指以患者本人體表的某些部位折定分寸，
作为量取穴位的長度單位。
穴區神經血管
隱神經，膝最上動脈，大隱靜脈。
適應症
子宮脫垂，陰道炎，前列腺炎，遺精陽萎，子宮收縮不全，月經不調，痛經；癃閉，尿瀦留，腎炎；目眩目痛；泄瀉痢疾，膨脹納差；膝關節及周圍軟組織疾患，鼻出血等。
穴位配伍療法
臍痛：1.水分 2.曲泉 3.中封
陰挺 a：1.曲泉 2.百會 3.氣海
陰挺 b：1.曲泉 2.照海 3.大敦
疝痛：1.急脈 2.曲泉 3.三陰交
小便不利 a：1.曲泉 2.中極 3.陰陵泉
小便不利 b，莖中痛：1.曲泉 2.行間
病注下血：1.五里 2.曲泉
膝臏腫痛：1.曲泉 2.膝眼 3.梁丘 4.血海