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. Author manuscript; available in PMC: 2010 Dec 1.
Published in final edited form as: J Pain. 2009 Jul 9;10(12):1231–1241. doi: 10.1016/j.jpain.2009.04.014

Figure 1.

Figure 1

Photograph of the forceps device used to measure muscle compression threshold. Arrows indicate the pressure sensor (which is also the contact area with the tissue) and the site where force was applied by the examiner.