Which point is on the thigh, 3 cun proximal to the superior border of the patella?

• A. ST 32
• B. ST 33
• C. ST 34
• D. ST 35

Answer: (B)

In locating points along the Stomach channel on the thigh, you use landmarks and a consistent vertical spacing from the patella. The point that sits in the thigh roughly three cun above the superior border of the patella is ST-33. It lies in the muscle belly between the quadriceps muscles, in a small hollow when the knee is extended. The other points in this region are either farther up toward the hip or nearer the knee, so they don’t match the exact distance of three cun from the patella. That precise position is why the correct choice is ST-33.