Where is SI-3 located in relation to the fifth metacarpal bone?

SI-3, also known as "Houxi," is located on the ulnar side of the hand, specifically in the depression just proximal to the head of the fifth metacarpal bone. This positioning places SI-3 proximal to the fifth metacarpal.

The significance of this point is rooted in its connection to the Small Intestine meridian and its role in various therapeutic applications, including pain relief and the treatment of issues related to the Small Intestine organ. The anatomical landmarks, such as the fifth metacarpal, are critical for acupuncturists to accurately locate points during practice. Understanding the correct spatial relationships also helps in ensuring the effectiveness of treatment and avoiding unwanted side effects.