What distance is measured from the medial border of the scapula to the midline?

The distance measured from the medial border of the scapula to the midline is typically defined as 3 cun in acupuncture practice. This measurement is based on the anatomical understanding of the average human body dimensions and the acupuncture system that utilizes cun as a unit of measurement, which is proportional to the patient’s body.

In this context, a cun is generally understood to be around the width of the patient's thumb or can also be defined in relation to the patient's body size. When measuring from the midline of the body to the medial border of the scapula, 3 cun represents an average distance that can be observed in most individuals. Accurate measurements are crucial in acupuncture practice for locating points correctly and for effective treatment.

The other distances listed, such as 2 cun, 4 cun, or 5 cun, do not reflect the typical anatomical measurement for this specific location, making them less relevant in this instance. The use of 3 cun aligns with standard anatomical references used in acupuncture, guiding practitioners in locating specific acupuncture points effectively.