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GB-32 Zhongdu (中瀆) — Middle Ditch
Depth
01–2 cun3.0
Perpendicular insertion
Precautions
No special precautions.
Location (classical)
On the lateral aspect of the thigh, 2 cun inferior to GB-31 (5 cun superior to the popliteal crease).
How to find it (practical)
In lateral decubitus, locate the point 5 cun above the popliteal fossa, on the midline of the lateral aspect of the femur.
Anatomy
Iliotibial tract, vastus lateralis. Innervated by the lateral femoral cutaneous nerve.
Needling
Perpendicular insertion, 1.0–2.0 cun.
Etymology
Zhong (中), middle; Du (渎), small water channel. The point lies between the tendons on the lateral aspect of the thigh, like a small stream.
CLASSICAL SOURCEJia Yi Jing
Clinical Relations
Adjacent Points on the Meridian