Select the point included for treating ankle joint pain aside from ST-41.

GB-40 is considered a beneficial point for treating ankle joint pain due to its anatomical location and its role in the Liver meridian, which influences movement and flexibility in the lower extremities. The point is situated near the ankle joint and is often used for conditions that affect this area, including pain, swelling, or stiffness.

In Traditional Chinese Medicine, GB-40, also known as Qiu Xu, is indicated for its ability to invigorate the Gallbladder and coordinate the movement of Qi and blood in the legs, making it a fitting choice for alleviating ankle pain. Additionally, GB-40 can help support conditions that stem from Qi stagnation or dampness, which can contribute to discomfort in the ankle region, enhancing its efficacy as a treatment point.

The other points, while useful in different contexts, serve different purposes that may not directly address ankle joint pain as effectively as GB-40. For example, LI-11 is more associated with cooling heat and is often used for skin issues or elbow pain; LV-4 is involved in regulating Liver Qi but doesn't specifically target the ankle; and SP-5, while beneficial for digestive issues and dampness, does not have a direct correlation to ankle joint treatment. Thus, GB-