Which acupuncture point is located on the sole of the foot, between the second and third metatarsal bones, approximately one third of the distance between the base of the second toe and the heel when the foot is plantar flexed?

• A. BL 66
• B. BL 67
• C. KD 1
• D. KD 2

Answer: (C)

The key idea is the exact spot of the first point on the Kidney channel on the sole. This point sits in the sole, in a shallow depression that forms when the foot is in plantar flexion. To locate it, imagine a line from the base of the second toe to the heel and find the point where that line is divided into anterior one-third and posterior two-thirds. This places the point in the intermetatarsal space between the second and third metatarsal bones, about one third of the distance from the base of the second toe toward the heel.

That description matches Kidney point Yong Quan precisely, which is why this is the best answer. The other points are in different locations—on the bladder channel elsewhere on the foot or on different parts of the kidney channel—so they don’t fit the described landmark.