Zhongdu Point (GB-32 / Middle Ditch)
Discover the exact location and acupressure method for Zhongdu (GB-32 / Middle Ditch). Learn its benefits for lower limb flaccidity, numbness, and hemiplegia – plus classic combinations for post-stroke and lumbar-leg conditions.
Indications
Lower limb flaccidity/bi-syndrome, lower limb numbness, hemiplegia, lateral thigh bi-pain, and lumbar and leg pain.
Precise Location
On the thigh, 5 cun above the popliteal crease, at the posterior border of the iliotibial tract.
Location Method
Sit upright or lie laterally. First locate Fengshi (GB-31, at the middle fingertip when standing with arms hanging naturally), then measure 3 finger-widths (approximately 3 cun) directly downward – firm pressure produces a distinct sore and distending sensation.
Massage Method
① Massage: Press and knead with the thumb. ② Moxibustion: Apply mild-warm moxa stick. Press and knead Zhongdu with the thumb about 200 times, or for 3–5 minutes, to treat lateral thigh bi-pain. Therapeutic actions: Relaxes the sinews and unblocks the collaterals, unblocks the meridians and relieves pain, and dispels wind and cold.
Compatibility
Post-stroke sequelae (hemiplegia, lower limb flaccidity): Combine with Huantiao (GB-30). Lower limb flaccidity/bi-syndrome and numbness: Combine with Fengshi (GB-31), Yanglingquan (GB-34), and Zusanli (ST-36). Lateral thigh bi-pain: Combine with Huantiao (GB-30) and Fengshi (GB-31). Lumbar and leg pain: Combine with Shenshu (BL-23), Weizhong (BL-40), and Yanglingquan (GB-34).
Efficacy & Actions
This point belongs to the Foot Shaoyang Gallbladder Meridian. It relaxes the sinews and unblocks the collaterals, unblocks the meridians and relieves pain, and dispels wind and cold. It is a commonly used key point for treating lower limb and lumbar-leg disorders. First documented in Zhenjiu Jiayijing. "Zhong" means middle; "Du" means ditch or water channel. Located on the midline of the lateral thigh, this point is where Gallbladder Meridian qi flows like water through a ditch – hence the name Zhongdu (Middle Ditch).
