Ganshu and Mingmen
Star肝俞、命門 (Gānshū, Mìngmén)
Modern Chinese point-pair (对穴) teaching, as compiled by Guo Changqing and colleagues at the School of Acupuncture, Moxibustion and Tuina, Beijing University of Chinese Medicine.
Points
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Back-Shu point of the Liver; nourishes Liver blood and benefits the eyes.
Prone. Angle the needle medially towards the spine, 0.5–0.8 cun deep, through the subcutaneous layer into latissimus dorsi and the erector spinae (sacrospinalis). Look for an aching numbness that runs out along the intercostal space. Keep the insertion shallow: the lung lies beneath and deep needling risks pneumothorax.
- ⚠ Pneumothorax
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Gate of Life; tonifies Kidney yang and the source fire and consolidates the essence.
Prone. The point lies two spinous processes above GV3, roughly opposite the umbilicus, in the hollow below the L2 spinous process. Insert 0.5–1.0 cun, straight in or angled slightly upwards. The needle crosses the subcutaneous tissue, the supraspinous and interspinous ligaments and reaches the ligamentum flavum (interarcuate ligament); the spinal canal lies immediately beyond, so that ligament marks the limit of insertion. An aching numbness should form locally, with an electric sensation shooting towards the hip and down the lower limb. Do not go deeper than stated, to protect the spinal cord.
Needling Safety
Cited hazards for these points. Tick what applies to the patient to see the cautions that follow from it.
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BL18 Ganshu
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⚠ Pneumothorax has been reported after needling this point. Wu J, Hu Y, Zhu Y, Yin P, Litscher G, Xu S 2015, Table 1 (Pneumothorax associated with acupuncture)
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No cited needling data yet for GV4. No flag here does not mean no risk.
Treatment Principle
Strengthen yang and support the essence, supplement original qi and tonify the Kidney.
Indications
Method
Patient prone. BL18 is angled medially towards the spine to 0.5–0.8 cun until an aching numbness runs along the intercostal space; GV4 is needled 0.5–1.0 cun, either straight in or at an oblique angle until an electric sensation passes to the hip and lower limb.
⚠ Cautions
BL18 overlies the lung: deep or perpendicular needling risks pneumothorax. At GV4 the spinal canal lies beneath — keep within the stated depth; the source warns against deep insertion at both points.
About
A pairing that strengthens yang, supports the essence and original qi and tonifies the Kidney. Its indications are mainly reproductive and urinary — spermatorrhoea, impotence, enuresis, painful urination, infertility — with lower back and leg stiffness and, through the Liver, night blindness and blurred vision.
Rationale
GV4, the Gate of Life, lies between the Kidneys and tonifies Kidney yang and the source fire. BL18, the Back-Shu point of the Liver, nourishes Liver blood and benefits the eyes. The Liver and Kidney share a common source (blood and essence transform into one another), which explains why eye symptoms sit beside reproductive ones in this combination.
Sources
- Guo Changqing (ed.). Acupuncture of Acupoint Combinations: Quick Lookups. Daylesford: Heart Space Publications, 2020 (English edition; © China Science and Technology Press). ISBN 978-0-6489215-5-4. Chapter 3, combination 14.
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