What is the location of the SI-6 acupuncture point?

The location of the SI-6 acupuncture point is indeed on the dorsal aspect of the head of the ulna, nestled within the cleft between the ulna and the triquetral bone. This point is known for its efficacy in treating a variety of conditions, particularly those related to the shoulder and upper back.

When considering the anatomical landmarks, SI-6 serves as a significant reference point in traditional acupuncture. Its precise position allows for effective needling techniques that target underlying meridians and connective tissues associated with the small intestine and other related structures. The emphasis on the dorsal aspect refers to the back side of the wrist where the ulna is situated, making it a distinctive identifying feature in the anatomy of this acupuncture point.

The other options provided do not accurately identify SI-6 and reflect either incorrect locations or descriptions that pertain to different points entirely. Thus, recognizing the unique position of SI-6 at the cleft of the head of the ulna is essential for practitioners when considering treatment plans that require precise acupuncture techniques.