Quantitative ultrasound using texture analysis of myofascial pain syndrome in the trapezius

Introduction/Background Myofascial pain syndrome (MPS) is a prevalent pain disorder characterized by myofascial trigger points (MTrP), which are stiff contracted regions within a taut band of muscle. Clinically MTrPs can be differentiated in two groups, latent and active. Active MTrPs induce spontaneous pain whereas latent MTrPs do not. Clinicians disagree on the criteria that differentiate active and latent MTrPs, necessitating an objective …