What is the measurement from the protuberance of the great trochanter to the middle of the patella?

The measurement from the protuberance of the great trochanter to the middle of the patella is typically considered to be 19 cun in the context of Traditional Chinese Medicine (TCM) and acupuncture practice. The cun is a traditional unit of measurement that is based on the individual's own anatomical landmarks, where one cun is approximately the width of the patient's thumb.

This specific measurement is crucial when locating acupuncture points on the body, as it helps in ensuring accuracy and precision during treatment. The distance reflects the anatomical relationship and can vary slightly based on individual body proportions, but 19 cun is the standardized figure used in practice. Understanding this measurement allows practitioners to effectively locate points for needling while adhering to the principles of TCM anatomy, leading to better treatment outcomes.