Which acupuncture point lies in the tender depression on the bulge of the vastus medialis muscle, about 3 cun proximal to the superior border of the patella?

• A. Baichongwo
• B. Heding
• C. Xiyan
• D. Dannangxue

Answer: (A)

Baichongwo is the point located in a tender depression on the bulge of the vastus medialis muscle, about 3 cun above the superior border of the patella. This spot sits on the medial thigh where the vastus medialis bulges, making it a distinct local point for knee and medial leg issues. The vastus medialis plays a key role in stabilizing the patella, so needling here targets the local tissue and pathways involved in knee pain, stiffness, and related conditions.

Other knee-related points are in different locations. For example, Xiyan refers to two points in the knee crease on either side of the patellar ligament, not in the medial thigh bulge described here. The same reasoning—these other points sit at different anatomical positions, so they don’t match the description of a tender depression on the vastus medialis bulge about 3 cun above the patella.