What is the classification of ST-40, located midway between the tibiofemoral joint and the lateral malleolus?

ST-40, also known as Fenglong, is classified as a Luo Connecting point. In acupuncture, Luo Connecting points serve unique therapeutic roles by connecting the primary channels to their respective Luo vessels. They also provide a pathway for the flow of qi and blood between the primary channels and the Luo vessels, which can help in addressing various conditions related to the channel's organ system, as well as overall balance and health.

The significance of ST-40 being a Luo point is particularly important due to its role in phlegm conditions, as it is commonly used to transform phlegm and benefit the spirit. Its anatomical location, being midway between the tibiofemoral joint and the lateral malleolus, aligns with its function, considering the treatment focus on issues related to the spleen and stomach channels.

In contrast, the other classifications serve different functions; Command points primarily influence specific regions of the body, Front Mu points relate more to the organs and their related pathological states, and Xi Cleft points are primarily involved in acute conditions or pain along the channel. Each of these classifications has its own distinct significance in acupuncture therapy, but ST-40's classification as a Luo Connecting point is what highlights its particular role in facilitating the connection and communication among