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BL-33 Zhongliao (中髎) — Middle Crevice
Depth
00.5–1 cun3.0
Perpendicular insertion
Precautions
High sensitivity.
Location (classical)
On the sacrum, in the third posterior sacral foramen.
How to find it (practical)
See Shang Liao (BL-31) for further details.
Anatomy
Gluteus maximus muscle. Third sacral nerve root.
Needling
Perpendicular insertion directly into the foramen, 0.5–1.0 cun.
Etymology
Zhong (中), center; Liao (髎), foramen. Located in the third sacral foramen.
CLASSICAL SOURCESu Wen
Clinical Relations
Adjacent Points on the Meridian