Figure 2

Single MTrP response: (A) model representation of decreasing deformation with depth. Local force experienced by the MTrP decreases quadratically with depth. (B) Distribution of MTrPs versus depth in tissue. (C) Cartoon Model of MTrP compression dependent upon depth in tissue. (D) MTrP stiffness increases linearly with depth in tissue. Inset shows average MTrP stiffness separated by pain (green) and no-pain (blue). (E) Inferred effective for at MTrP as a function of depth in tissue. (F) Inferred effective for at MTrP as a function of depth in tissue separated by pain (green stars) and no-pain (blue circles).