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. Author manuscript; available in PMC: 2017 Aug 14.
Published in final edited form as: J Ultrasound Med. 2015 Oct 21;34(12):2149–2161. doi: 10.7863/ultra.14.08033

Figure 6.

Figure 6

Changes in tissue status after dry needling at the 3- and 8-week follow-ups. Left, Open circles represent individual mechanical heterogeneity indices (MHI) of upper trapezius muscles with treated active myofascial trigger points at different visits; gray lines are drawn between individual active trigger points that responded at week 3 or 8; unconnected circles represent trigger points that did not respond; open diamonds represent mean mechanical heterogeneity indices of upper trapezius muscles with trigger points that responded at week 3; and open squares represent mean mechanical heterogeneity indices of upper trapezius muscles with trigger points that responded at week 8. Right, Open circles represent individual mechanical heterogeneity indices of upper trapezius muscles with treated active trigger points at different visits; gray lines are drawn between individual active trigger points that resolved at week 3 or 8; unconnected circles represent trigger points that did not resolve; open diamonds represent mean mechanical heterogeneity indices of upper trapezius muscles with trigger points that resolved at week 3; and open squares represent mean mechanical heterogeneity indices of upper trapezius muscles with trigger points that resolved at week 8. *P < .01; **P < .001.