LOCATION
Posterior to the thigh, at the midpoint of transverse gluteal crease.
Features
-/-
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
Posterior femoral cutaneous nerve, sciatic nerve, and the arteries and veins parallel to the sciatic nerve.
Sciatica，lumbosacral pain radiculitis，paralysis of the lower limbs，pediatric paralysis sequelae；constipation，hemorrhoids，urinary retention，hip inflammation. Low back pain/sciatica where pain runs down the posterior aspect of the leg. Weakness of the lower limbs.
Indication
Good for hemorrhoids. Good point for sciatica, paralysis of limbs.
Combinations
Sciatica，paralysis of the lower limbs：BL 36 & GB 30 & GB 39.
Constipation：BL 36 & BL 54 & BL 57.
Leg pain：BL 36 & BL 26 & BL 40.
穴位
在大腿後面，臀下橫紋的中點。
特點
-/-
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
股後皮神經，坐骨神經，及與坐骨神經並行的動、靜脈。
適應症
坐骨神經痛，腰骶神經根炎，下肢癱瘓，小兒麻痺後遺症；便秘，痔瘡，尿瀦留，臀部炎症等。
穴位配伍療法
坐骨神經痛，下肢癱瘓：1.承扶 2.環跳 3.懸鍾
便秘：1.承扶 2.秩邊 3.承山
腰腿痛：1.承扶 2.關元俞 3.委中