Which point lies on the dorsum of the foot between the second and third metatarsal bones, located 1 cun proximal to ST-44?

• A. ST 42
• B. ST 41
• C. ST 43
• D. SP 2

Answer: (C)

The essential idea here is how points along the Stomach channel are laid out on the dorsum of the foot in relation to the metatarsal bones and a cun measurement. The description—on the dorsum between the second and third metatarsal bones, about 1 cun proximal to the point between the toes (ST-44)—fits exactly with ST-43. This point sits in the depression between the heads of the second and third metatarsals and is located about one cun toward the ankle from ST-44. That specific placement is what makes it the best match.

In practice, you locate the web space between the second and third toes (ST-44), then move one cun toward the ankle along the dorsum; you’ll find the depression between the second and third metatarsal bones, which is ST-43. Nearby points occupy different spots along the dorsum or between other metatarsals, which is why this one is the correct descriptor.