Atlas of Acupuncture

4 Acupuncture Points of the Twelve Primary Channels

Location

4 cun proximal to the dorsal wrist joint space (‘dorsal wrist

crease’), between the radius and the ulna, radial to the tendon of

the extensor digitorum communis muscle.

How to find

As the location of the dorsal wrist crease varies, the wrist joint

space should be used for orientation instead (➞3.3.3). By mov-

ing the patient’s wrist in a relaxed way, the joint space becomes

more easily palpable. From the joint space, measure 4 cun in a

proximal direction and locate T.B.-8in a depression between the

ulna and radial to the extensor digitorum communis muscle. Or:

Spreading hands technique (➞ 2.3.3): Divide the distance

between the elbow crease and the wrist joint space (
12 cun)

into thirds and locate T.B.-8one third of the distance from the

wrist joint between the radius and the ulna.

Needling

Vertically or obliquely up to 1.5 cun

Actions/Indications

● Benefits the ears and the voice

● Opens the channel and the luo-connecting vessels, alleviates

pain

T.B.-8 Three Yang Connection SANYANGLUO

Wrist joint space

T.B.-8

4 cun

T.B.-9

L.I.-7

S.I.-7

T.B.-6

T.B.-4 T.B.-5

L.I.-6

S.I.-6 L.I.-5

L.I.-10

T.B.-10 L.I.-11

S.I.-8

1

9

2 3 4 5 6 7 8

10

11

(^12) cun
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