SI18

Small Intestine Channel

Zygomatic Arch

颧髎Quán Liáo

Anatomical location

On the face, directly below the outer canthus of the eye, in the depression at the lower border of the zygomatic bone.

Main function

Relieves facial pain, treats facial paralysis, clears Heat.

  • Crossing Point with the Triple Energizer

Therapeutic indications

  • Facial paralysis
  • facial spasm
  • toothache
  • headache
  • Facial tic
  • Trigeminal neuralgia
  • Cheek swelling
  • Jaundice

Name and classical tradition

Quanliao, 颧髎, is the “cleft of the cheekbone.” 颧 (顴) is the cheekbone, the zygomatic bone; 髎, the hollow next to the bone. The name is anatomical: the point lies in the depression below the cheekbone. It shares the 髎 with other points of the face, like ST3, Juliao, or LI19, Heliao.

The first work to record it is the Zhenjiu Jiayi Jing (Systematic Classic of Acupuncture and Moxibustion). Sun Simiao’s Beiji Qianjin Yaofang, in the Tang period, writes it 權髎, with 權 in place of 顴, two characters related in sound and in form. It is a variant attributed to a specific work and author, although the citation has not been verified. The reference works also give it the alternative name 兌骨, which should not be confused with the name the Nanjing (Classic of Difficulties) gives to HT7, Shenmen, at the wrist.

Other names

  • 兌骨Jiayi Jing
Location of point SI18, Zygomatic Arch
CC BY-ND 4.0 (opens in a new tab)
View point on the 3D modelSI18 on the anatomy
Needling techniquePerpendicular insertion, 0.2-0.3 cun, avoiding the facial nerve.
Depth0.2-0.3 cun
MoxibustionContraindicated
PrecautionsAvoid deep needling near the facial nerve.
Cover of the guide “Protocols for the 20 most common patterns”

Free guide · PDF

Protocols for the 20 patterns you see most in practice

Each pattern with its tongue, its pulse, the treatment principle and the points to tonify and disperse. Made for the treatment table, not the bookshelf.

Do you use SI18 with your patients?

In the Clinic you record it in the patient's file, next to the tongue, the pulse and the measurements, so at the next session you know exactly what you used. The Atlas is built in.

See the Clinic