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BL-34 Xialiao (下髎) — Lower Crevice
Depth
00.5–1 cun3.0
Perpendicular insertion
Precautions
High sensitivity.
Location (classical)
On the sacrum, in the fourth posterior sacral foramen.
How to find it (practical)
See Shang Liao (BL-31) for further details.
Anatomy
Gluteus maximus muscle. Fourth sacral nerve root.
Needling
Perpendicular insertion directly into the foramen, 0.5–1.0 cun.
Etymology
Xia (下), low or lower; Liao (髎), foramen. Located in the fourth sacral foramen.
CLASSICAL SOURCESu Wen
Clinical Relations
Adjacent Points on the Meridian