4.7 The Bladder Channel System – Foot taiyang(zu tai yang jing luo)
Location
1.5 cun lateral to the posterior midline, on the level of the 3rd
sacral foramen.
How to find
For more detail on orientation in the lumbar and sacral region,
see ➞3.4.3, 3.4.4. First of all find L5. The next palpable struc-
ture in an inferior direction is the most superior sacral spinous
process. Palpate in an inferior direction for two further sacral
processes and locate the 3rd sacral foramen in a depression less
than 1 cun lateral to the 3rd process. BL-29is located on the same
level (3rd sacral foramen) and 1.5 cun lateral to the midline.
Also located on this level is ➞BL-33(over the 3rd sacral
foramen).
Needling
Vertically 0.5–1.5 cun
Actions/Indications
● Strengthens the lower back and the Kidneys
● Expels Cold
● Regulates the Lower Burner and stops diarrhoea
Mid Spine Shu ZHONGLÜSHU BL-29
Midline
1.5 cun
Level of the
iliac crests
Spinous process L4
Spinous process L5
Sacral
foramina BL-29
Lumbosacral
junction
Sacrum
PSIS
Tuffier‘s line Iliac crest
L4
L5
Sacrum
Ilium
Iliosacral joints
Sacral foramen 1
2
3
4
BL-31
BL-32
BL-33
BL-34
23
25
4
3
54
Ex-B-6
(^523)
4
5
2
36
30
1
Bladder channel,
lateral branch
Bladder channel,
medial branch
Du mai
Ex-B-5
Ex-B-8
Ex-B-5
Ex-B-7
Ex-B-11
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