Extra point · Upper Limb
Great Bone Space
大骨空Dà Gǔ KōngAnatomical location
On the dorsum of the thumb, at the midpoint of the interphalangeal joint.
Same point as 100PC · Dà Gǔ Kōng — Curious Points catalogMain function
Benefits the eyes, stops bleeding.
Therapeutic indications
- Conjunctivitis
- cataracts
- epistaxis
Name and classical tradition
Dagukong, 大骨空, is the “great hollow of the bone”: 大, great, here the thumb; 骨空, the hollow between the bones. It is the same term that gives its title to the Gu Kong Lun (骨空論) chapter of the Suwen (Basic Questions), the one on the hollows of the bones. The point is on the dorsum of the thumb, at the joint.
The Zhenjiu Dacheng (Great Compendium of Acupuncture and Moxibustion) lists it among the extra points: «大骨空二穴，在手大指中節上，屈指當骨尖陷中是穴，治目久痛，及生翳膜內障，可灸七壯». With the finger bent, in the hollow at the tip of the bone, for eye pain that won’t go away and for cataracts, with seven cones of moxa. Its counterpart on the little finger is EX-UE6.
