Figure 1From: High prevalence of shoulder girdle muscles with myofascial trigger points in patients with shoulder pain Referred pain patterns (red) from the upper and lower trapezius muscle MTrPs (Xs), according to Simons et al. Illustrations courtesy of LifeART/MEDICLIP, Manual Medicine 1, Version 1.0a, Lippincott, Williams & Wilkins, 1997.Back to article page