SJ9 (Sanjiao 9) - Acupuncture Point Information

Chinese Name: Sidu
English Name: Four Canals

Location: When the hand is supine, this point can be found 5 cun below the olecranon, between the radius and the ulna.


Major point for forearm pain (eg: tennis elbow).

Primary Indications:

Sudden loss of voice, deafness, toothache, forearm pain.

Other Indications:

Headache, vertigo, neuraesthenia, paralysis of upper limb, nephritis.


This information is from the book Acupuncture Point Dynamics and has been used with permission from the author John McDonald.

View other points on the Sanjiao channel:

(SJ1, SJ2, SJ3, SJ4, SJ5, SJ6, SJ7, SJ8, SJ9, SJ10, SJ11, SJ12, SJ13, SJ14, SJ15, SJ16, SJ17, SJ18, SJ19, SJ20, SJ21, SJ22, SJ23)

[Click here to return to the complete Acupuncture Points Listing]

[Click here to return to the San Jiao Meridian chart]