二白 (Èrbái) — Two Whites
Extra point · Extra (Upper Extremity) · point EX-UE2
Traditionally used for
- Bowel health
Location
A pair of points on the palmar forearm, 4 cun proximal to the wrist crease, one on either side of the tendon of flexor carpi radialis.
How to locate: With the forearm relaxed and supinated, measure 4 cun proximal to the wrist crease (one third of the way from the wrist crease to the cubital crease); the two points lie either side of the flexor carpi radialis tendon, which stands out when the wrist is flexed against resistance.
Distances are in cun, a proportional unit — how to measure.
3D view
The 3D view is not available on this device. The 2D maps above show the same point.
Drag, or focus the model and use the arrow keys, to rotate; + and − to zoom; 0 to reset; Esc to close.
Needling not assessed: no cited needling data for this point.
3D anatomy: BodyParts3D, © The Database Center for Life Science licensed under CC Attribution 4.0 International (licence). Subset, simplified and recoloured by Verscienta — changes and licence details.
Approximate placement, carried over from our 2D body map onto a single adult male model (BodyParts3D) and checked against the point's location text. Shown on one side of the body. Locate the point on your patient by the location text and palpation, not by this model.
- Cun on this part of the body
- From the cubital crease to the wrist crease: 12 B-cun (WHO 2008, General Guidelines, Proportional Bone (Skeletal) Measurements, p. 12). On the model, the cubital crease = line between the humeral epicondyles. On the model, the wrist crease = line between the radial and ulnar styloid tips.
- Needle angle and depth
- Needling not assessed: no cited needling data for this point.
3D anatomy: BodyParts3D, © The Database Center for Life Science licensed under CC Attribution 4.0 International (licence). Subset, simplified and recoloured by Verscienta — changes and licence details.
Needling
Functions
- Benefits the anus and treats haemorrhoids
- Raises qi to lift rectal prolapse
Indications
Clinical Notes
Similar Points
Sources
- Focks C, ed. Atlas of Acupuncture. Edinburgh: Churchill Livingstone Elsevier, 2008. (Locating method and actions.)
📝 Notes
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