Tongren Shuxue Zhenjiu Tujing states: "Collateral of foot shaoyang".

bubble_chart Etymology

"Zhong" (中), middle or center; "du" (瀆), ditch or groove. The point is located on the midline of the lateral aspect of thigh, in a depression between muscles and bones, resembling a ditch or groove.

bubble_chart Location

Zhongdu (GB32) acupoint
(adapted from "Meridians and Acupoints")

On the midline of the lateral aspect of thigh, 5 cun above popliteal crease (middle of knee), in the depression between vastus lateralis and biceps femoris muscles. It is located 2 cun below Fengshi (GB31).

• Zhenjiu Jiayi Jing: "Located on the outer side of thigh, 5 cun above knee, in the depression between muscles";
• Xunjing Kaoxue Bian: "One text places this point in front of Fengshi (GB31) and states it is 1 cun above Fengshi", which is likely an error.

bubble_chart Anatomy

• Muscles: below fasciae latae, in vastus lateralis.
• Nerve: lateral femoral cutaneous nerve, muscular branch of femoral nerve.
• Vessels: muscular branches of lateral circumflex femoral artery and vein.

bubble_chart Manipulation

Perpendicular insertion 1 to 2 cun. Moxibustion with moxa cone 3 to 5 times, moxibustion with moxa stick for 10 to 15 minutes.

bubble_chart Efficacy

Dispel wind-dampness, fortify legs and feet.

• Classical: cold qi in muscles, numbness due to sinew Bi-syndrome, wind pain in legs and hips extending to waist and hip, atrophy-flaccidity disease, hypochondriac pain.
• Modern: lateral femoral cutaneous neuralgia.

bubble_chart Combinations

• Atrophy : acupuncture Zhongdu (GB32), Huantiao (GB30), moxibustion Zusanli (ST36), Feishu (BL13).
• Hypochondriac pain: Qiuxu (GB40), Zhongdu (GB32).