Atlas of Acupuncture

4 Acupuncture Points of the Twelve Primary Channels

Location

1.5 cun lateral to the posterior midline, on the level of the second

sacral foramen.

How to find

Quick method:Locate the posterior superior iliac spine (PSIS

➞3.4.3): from the rima ani, palpate 3 cun (1 handbreadth) in a

superior and lateral direction at a 45° angle, until you can feel a

distinct bony ridge (often superficially visible by a dimple).

BL-28is located slightly inferiorly and medially to the PSIS,

1.5 cun lateral to the midline on the level of the 2nd sacral fora-

men. For more detail on orientation in the lumbar and sacral

region ➞3.4.3, 3.4.4.

Located on the same level are ➞BL-32(over the 2nd sacral

foramen) and ➞BL-53(3 cun lateral to the midline). ➞BL-27

is located slightly superiorly and medially to the PSIS on the

level of the 1st sacral foramen.

Needling

Vertically 0.5–1.5 cun. For local disorders, slightly oblique

insertion towards the iliosacral joint.

Actions/Indications

● Regulates the Bladder and the Lower Burner, clears Damp-

Heat from the Lower Burner, removes stagnation and trans-

forms masses

● Benefits the lumbar region and the legs

Special features

Back-shupoint of the Bladder

BL-28 Bladder Shu PANGGUANGSHU

BL-27

BL-28

Fingers on the PSIS

1.5cun

Sacral

foramen

2

3

4

BL-28

Midline

1

Posterior superior

iliac spine

45 °

Superior end

of the rima ani

Posterior superior

iliac spine

3 cun

BL-27

BL-28

1.5 cun

Iliosacral joints

Sacrum

Ilium

PSIS

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