Which acupuncture point is located on the knee, in the hollows formed when the knee is flexed, immediately below the patella and both medial and lateral to the patellar ligament?

• A. Bafeng
• B. Lanweixue
• C. Dannangxue
• D. Xiyan

Answer: (D)

Xiyan refers to the two knee hollow points located in the depressions on either side of the patellar ligament when the knee is flexed. The description in the question—located immediately below the patella, in the hollows formed by bending the knee, and medial and lateral to the patellar ligament—fits these points exactly. They’re known as the Eyes of the Knee and are commonly used to relieve knee pain, swelling, and stiffness by addressing local stagnation and tissue tension around the joint. Other knee points are in different locations or have different indications, so they don’t match this precise spot.