Which acupuncture point is located on the lower leg midway between the tibiofemoral joint line and the lateral malleolus, two finger-breadths lateral to the anterior crest of the tibia?

• A. ST 40
• B. ST 41
• C. ST 42
• D. SP 3

Answer: (A)

Locating this point relies on precise surface landmarks along the Stomach channel on the lower leg. The correct spot is on the leg, about midway between the knee joint line (tibiofemoral) and the ankle (lateral malleolus), and two cun lateral to the anterior crest of the tibia. That placement sits on the anterolateral aspect of the lower leg and corresponds to ST-40, the Luo-connecting point of the Stomach channel. The other points are located on the foot or in different positions, so they don’t match these leg landmarks.