GB32 Middle Ditch

Reviewed by · Licensed Acupuncturist & TCM Physician · Last reviewed June 2026

GB32 (Zhongdu, “Middle Ditch”) is an acupuncture point on the Gallbladder Channel Meridian. It is located on the lateral aspect of the thigh, 5 cun superior to the popliteal crease, between the vastus lateralis and biceps femoris muscles. It dispels wind-damp, alleviates pain in the leg.

Location

On the lateral aspect of the thigh, 5 cun superior to the popliteal crease, between the vastus lateralis and biceps femoris muscles.

Needling

Perpendicular insertion 1-2 cun.

TCM functions

Dispels wind-damp, alleviates pain in the leg.

Indications

Pain and numbness of the thigh and knee, paralysis of lower limbs.

Clinical notes

GB32, 'Middle Ditch,' is primarily used for dispelling wind-damp and alleviating pain along the lateral aspect of the thigh and knee. It is particularly effective for conditions like sciatica, numbness, and weakness of the lower limbs, especially when there is a sensation of heaviness or cold. This point helps to unblock the meridian and promote circulation in the leg, making it valuable for various forms of lower limb paralysis or atrophy. It is often used in combination with other local points for knee and leg pain.

On the Gallbladder Channel channel

GB32 is one of 44 points on the Gallbladder Channel Meridian. Nearby points:

Frequently asked questions

Where is GB32 located?

GB32 (Zhongdu) is located on the lateral aspect of the thigh, 5 cun superior to the popliteal crease, between the vastus lateralis and biceps femoris muscles.

What is GB32 used for?

GB32 dispels wind-damp, alleviates pain in the leg. Common clinical indications include pain and numbness of the thigh and knee, paralysis of lower limbs.

How is GB32 needled?

Perpendicular insertion 1-2 cun.

Which meridian is GB32 on?

GB32 is a point on the Gallbladder Channel Meridian (Zú Shàoyáng Dǎnjīng).

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⚠️ This page is for general education and is not medical advice. Acupuncture is a traditional practice; evidence varies by condition and study quality, and individual results differ. It does not replace diagnosis or treatment by a licensed professional. Always consult a qualified acupuncturist or physician.