족양명위경 (ST)   >   ST43 함곡 (陷谷)
부위
발등, 둘째와 셋째 발허리뼈(the 2nd and 3rd metatarsal bones)의 사이, 둘째 발허리발가락관절(the 2nd metatarsophalangeal joint)의 몸 쪽 오목한 곳.

On the dorsum of the foot, between the second and third metatarsal bones, in the depression proximal to the second metatarsophalangeal joint.
침구법
- 直刺 0.3～0.5寸
- 斜刺 0.5～1寸