Zhonglushu (BL29)
Zhonglushu (BL29), “Central Backbone Shu”, is a point on the Bladder meridian. It is point 29 of the 67 on the channel. Strengthens the lumbosacral spine and regulates the intestines.
Location
On the sacrum, level with the third posterior sacral foramen, 1.5 cun lateral to the median sacral crest.
Functions according to tradition
Strengthens the lumbosacral spine and regulates the intestines.
Traditional indications
- Lumbosacral pain
- Dysentery
- Hernia
- Back stiffness
Indications described by tradition; they do not amount to proven clinical effectiveness for each one.
Precautions
No specific precautions are described beyond the general ones for acupuncture. Needling must always be performed by a trained professional.
Points on other channels with similar indications
They share several traditional indications with this point. Comparing them helps understand why one or the other is chosen.
- GV2 Yaoshu (Du Mai (Governing Vessel)): Lumbosacral pain
- GV5 Xuanshu (Du Mai (Governing Vessel)): Back stiffness
- GB26 Daimai (Gallbladder): Hernia
- KI16 Huangshu (Kidney): Hernia
- SP14 Fujie (Spleen): Hernia
- SP16 Fuai (Spleen): Dysentery
Point profile
- Code
- BL29
- Pinyin name
- Zhōng Lǚ Shū
- Characters
- 中膂俞
- Translation
- Central Backbone Shu
- Meridian
- Bladder
- Element
- Water
- Topics
- Sacrum, Intestine, Lower back
Health notice. Educational and study content. It describes concepts of Traditional Chinese Medicine and does not replace diagnosis or treatment by a healthcare professional. Needling, medicinal herbs and invasive techniques must be applied by trained professionals. Safety guide.
