Superficial Back Line myofascial meridian. Permission Joseph E. Muscolino. Kinesiology - The Skeletal System and Muscle Function, 3rd ed. (Elsevier, 2017). Modeled from Tom Myers' Anatomy Trains art.

The Evidence of Anatomy Trains Myofascial Meridians

Strain transmission along myofascial meridians might explain referred pain and offer a rationale for the development of more body-wide holistic approaches.

Hamstring Group. Permission Joseph E. Muscolino. Manual Therapy for the Low Back and Pelvis - A Clinical Orthopedic Approach (2015)

Five Muscles of Sacroiliac Stabilization – Part 3 – Hamstrings

The connection between the hamstrings and the sacroiliac joint is through what is known as the superficial back line myofascial meridian/anatomy train. If the hamstrings are tight, their tension pulling force will be exerted through the sacrotuberous ligament and onto the sacrum.