Fu refers to the top; Qie refers to the gap between the knees. The point is above the popliteal fossa, hence the name.

[Location]

Fuxi (BL38) acupoint
(quoted from "Meridians and Acupoints")

• Zhenjiu Jiayi Jing: "One inch above Weiyang (BL39)";
• Yizong jinjian: "Yinmen (BL37) dips outside, following Weiyang (BL39) an inch clear."

[Anatomy]

• Muscle: medial to the biceps femoris tendon.
• Nerves: posterior femoral cutaneous nerve, common peroneal nerve.
• Vessels: lateral arteries and veins above the knee.

[Manipulation]

Perpendicular insertion 0.5~1 inch. moxa cone moxibustion 3 to 5 minutes, moxa stick warm moxibustion for 5 to 10 minutes.

[Efficacy]

Soothe muscles and clear away heat.

• Classical: heat in the lower abdomen, hard stool, indolence of the femoral hub, muscle cramp, not allowed to lie down, and carbuncle in the femoral area.
• Modern: gastrocnemius spasm, bladder inflammation.

[Recipe]

• Calf cramps: Fuxi (BL38), Kunlun (BL60).