4 Acupuncture Points of the Twelve Primary Channels
Location
1.5 cun lateral to the posterior midline, on the level of the lower
border of the spinous process of the 6th thoracic vertebra (T6).
How to find
First, locate the spinous process of the C7 (➞3.4.1). From there,
count down six spinous processes to the lower border of the
spinous process of T6. Measure 1.5 cun laterally to locate BL-16
on the highest point of the paraspinal musculature. Or:With the
patient standing and their arms hanging down, the spinous
process of T7 is level with the inferior angle of the scapula
(➞3.4.2). The next spinous process in a superior direction
belongs to T6. Locate BL-161.5 cun lateral to the midline.
Located on the same level are ➞Du-10(on the midline), a point
of ➞Ex-B-2 (0.5 cun lateral to the midline) and ➞BL-45
(3 cun lateral to the midline).
Needling
0.5–1 cun obliquely towards the spine or transversely (subcuta-
neously). Caution: Pneumothorax.
Actions/Indications
● Unbinds the chest and regulates the Qi movement in the tho-
rax and the abdomen
Special features
Despite its designation as Back-shupoint of the du mai, this
point is hardly mentioned in classical or modern texts.
BL-16 Governing Shu DUSHU
Midline
1.5
cun
1.5
cun
BL-16
Spinous process T12
Spinous process T7
Spinous process T6
Spinous process T3
Spinous process C7
Base of the
scapular spine
Inferior
angle
Bladder channel,
lateral branch
Bladder channel,
medial branch
Medial borderof the scapula
15
17
14
12
46
44
42
1 2 3 4 5 6 7 8 9
S.I.-12
S.I.-10
11 13
13
11
9
S.I.-15
Ex-B-3
Spinous process T7 Du-10 Inferior
angle
3 cun
BL-45
Spinous process T7
Spinous process T6
Inferior
angle
Ex-B-2
(parts)
Spinous process L1
Spinous process L2
Spinous process L3
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