SI-4 Wangu
SI-4 Wangu (腕骨) is a point on the Small Intestine meridian. In TCM theory it is described as influencing the channel's qi, and it is traditionally used in the context of the whole pattern rather than as a stand-alone remedy. This page explains how to locate it, what the tradition says about it, and how to press it safely.
Location
On the ulnar side of the hand, in the depression between the base of the fifth metacarpal and the triquetral bone.
How to find it
Find the little-finger side of the wrist. The point is in the hollow just behind the base of the fifth metacarpal.
Traditional functions
- Yuan-source point of the Small Intestine meridian
- Clears heat
- Benefits the neck and eyes
Traditional uses
- Wrist pain
- Neck stiffness
- Eye irritation in traditional practice
- Jaundice in classical texts
How to press it
Press gently for 1 minute. Avoid pressing directly on the bony prominence.
Acupressure is generally a gentle practice. Use the pad of the thumb or finger, start with light pressure, and increase only to a comfortable level. A mild ache or warmth is common; sharp pain is a signal to ease off.
Safety
Avoid strong pressure over an injured or swollen wrist.
How this is viewed today
SI-4 is used in acupuncture for wrist and neck pain. Evidence is limited.
Sources & further reading
- Huangdi Neijing (黃帝內經), c. 2nd century BCE.
- Nanjing (難經), c. 1st–2nd century CE.
- World Health Organization, Standard Acupuncture Nomenclature, 2nd ed., 1991.
- Deadman P, Al-Khafaji M, Baker K. A Manual of Acupuncture. Journal of Chinese Medicine Publications.
- National Center for Complementary and Integrative Health, Acupuncture: What You Need To Know.
Related: Small Intestine meridian · Acupoint library · SI-3 Houxi · SI-6 Yanglao · LI-4 Hegu · all twelve meridians