Back-shu point of triple energizer meridian.

bubble_chart Etymology

"Sanjiao" is the pinyin for "三焦", "shu" refers to "acupoint". This point corresponds to triple energizer and is the back-shu point of it.

bubble_chart Location

Sanjiaoshu (BL22) acupoint
(adapted from "Meridians and Acupoints")

The point is located below the spinous process of first lumbar vertebra (Xuanshu (GV5)), 1.5 cun lateral to the midline.

• Zhenjiu Jiayi Jing: "Located below 13th vertebra, 1.5 cun lateral to each side."

bubble_chart Anatomy

• Muscles: between lumbar membrane, longissimus and iliocostalis.
• Nerve: the end of lateral cutaneous branch of posterior branch of 10th thoracic nerve; deep layer, lateral branch of posterior branch of 1st lumbar nerve and upper 2 to 3 lateral branches.
• Vessel: medial branch of dorsal branch of 1st lumbar artery and vein.

bubble_chart Manipulation

Perpendicular or oblique insertion 1 to 1.5 cun to the side of the spine. Moxibustion with moxa cone 3 to 7 times, moxibustion with moxa stick for 10 to 15 minutes.

bubble_chart Efficacy

Regulate triple energizer, unblock water passages.

• Classical: headache, inability to eat, abdominal distension and fullness, bowel sounds, vomiting, diarrhea, low back pain, chills and fever, difficulty in urination, shoulder and back tension, bloody urine , abdominal mass, bitter taste and cracked lips, consumptive thirst, vomiting, dizziness, red and white dysentery, edema.
• Modern: gastritis, enteritis, renal colic, nephritis, abdominal retention of water, urinary retention, enuresis, neurasthenia.

bubble_chart Combinations

• Borborygmus, distension in the intestines, and a strong urge for diarrhea: Sanjiaoshu (BL22), Xiaochangshu (BL27), Xialiao (BL34), Yishe (BL49), Zhangmen (LR13).
• Nephritis: Sanjiaoshu (BL22), Qihaishu (BL24), Dachangshu (BL25), Zusanli (ST36).
• Diabetes insipidus: Guanyuan (CV4), Sanjiaoshu (BL22), Shenshu (BL23), Qihaishu (BL24).