What is the location of Back Shu point BL-28?

The correct location of Back Shu point BL-28, which corresponds to the urinary bladder, is 1.5 cun lateral to the 2nd sacral foramen. This point is situated on the lower back region and is part of a group of points known as Back Shu points, which are located along the bladder meridian.

To locate BL-28 accurately, practitioners typically identify the sacral foramen and measure 1.5 cun laterally from the 2nd sacral foramen. This specific anatomical reference is crucial for ensuring proper needling technique and achieving the desired therapeutic effect. The other options provided do not correspond to the established anatomical location of BL-28, as those points reference different vertebrae or foramen that are not related to this specific Back Shu point. Understanding the correct landmarks is essential for practitioners to provide effective acupuncture treatment.