One of the Baliao points.

[Origin]

Zhong, middle, liao, also known as 窭, bone hole. The point is the third posterior sacral foramen, ranking among the upper, second, middle and lower Baliao points, hence its name.

[Location]

Baliao acupoints (BL31~BL34)
(quoted from "Meridians and Acupoints")

• Zhenjiu Jiayi Jing: "In the third sky, among the chivalrous spines";
• Zhenjiu Jicheng: "In Ciliao (BL32), straight to Zhonglushu (BL29)"

[Anatomy]

• Muscle: Origin of gluteus maximus.
• Nerve: posterior branch of the third sacral nerve.
• Vessels: posterior branches of lateral sacral artery and vein.

[Manipulation]

Directly opposite the posterior sacral foramen perpendicular insertion or slightly upward oblique insertion 1 to 2 inches. It should not be too deep to avoid passing through the sacral hole and injuring the rectum and bladder. moxa cone moxibustion 3 to 7 weeks, moxa stick warm moxibustion for 10 to 15 minutes.

[Efficacy]

Manage the lower jiao and strengthen the waist and knees.

• Classical: Lumbago, cold in the middle, abdominal distension and fullness, difficulty in defecation, diarrhea, dysentery, menstrual irregularities, red leucorrhea.
• Modern: prostatitis, pelvic inflammation.

[Recipe]

• Difficulty in defecation: Zhongliao (BL33), Chengjin (BL56), Chengshan (BL57), Zhongwan ( CV12), Shimen (CV5), Dazhong (KI4), Taixi (KI3), Taichong (LR3).
• menstrual irregularities, leukorrhea: Shenshu (BL23), Zhongliao (BL33), Pangguangshu (BL28), Guanyuan (CV4 ), Sanyinjiao (SP6).