Which point on the thigh is on the same line, in a depression 3 cun proximal to the superior border of the patella?

• A. ST 33
• B. ST 32
• C. ST 34
• D. ST 31

Answer: (A)

The test focuses on locating points along the Stomach channel on the front of the thigh using the cun-distance from the patella. The description “in a depression 3 cun proximal to the superior border of the patella” matches the third point on that thigh line, which sits in a hollow about 3 cun above the kneecap. That positioning corresponds to ST-33. The other thigh points sit at different distances or landmarks along the line, so they don’t fit this exact description. To locate it clinically, find the patella, then move upward along the Stomach-channel line about 3 cun to feel the shallow hollow where ST-33 lies.