Which Back Shu point is located 1.5 cun lateral to the 1st sacral foramen?

The Back Shu point located 1.5 cun lateral to the 1st sacral foramen is indeed BL-27, which is the Back Shu point for the Small Intestine. This point is significant in Traditional Chinese Medicine (TCM) for addressing issues related to the small intestine, such as problems with digestion and absorption of nutrients.

In anatomical reference, the 1st sacral foramen serves as a landmark for locating various acupuncture points, and the specific location of BL-27 is determined using the 1.5 cun measurement laterally from this foramen. The precise localization is crucial because it ensures that acupuncture treatments are effectively targeted for therapeutic purposes.

Understanding the location and function of the Back Shu points is essential in TCM as these points are considered to be connected to the internal organs they correspond with, facilitating the flow of Qi and aiding in the treatment of organ-related disorders.