Table 3 http://www.aafp.org/afp/2002/0215/p653.html Figure 1 Figure 2 http://www.aafp.org/afp/2002/0215/p653.html http://www.aafp.org/afp/2002/0215/p653.html http://www.aafp.org/afp/2002/0215/p653.html tight knots or bands in the muscle http://www.aafp.org/afp/2002/0215/p653.html Table 4 myofascial trigger points http://www.aafp.org/afp/2002/0215/p653.html http://www.aafp.org/afp/2002/0215/p653.html Table 2 http://www.aafp.org/afp/2002/0215/p653.html Figures 3a http://www.aafp.org/afp/2002/0215/p653.html http://www.aafp.org/afp/2002/0215/p653.html http://www.aafp.org/afp/2002/0215/p653.html aafp.org/afp/2002/0215/p653 hyperirritable Table 1 trigger points http://www.aafp.org/afp/2002/0215/p653.html http://www.aafp.org/afp/2002/0215/p653.html http://www.aafp.org/afp/2002/0215/p653.html American Family Physician http://www.aafp.org/afp/2002/0215/p653.html http://www.aafp.org/afp/2002/0215/p653.html Figure 3c http://www.aafp.org/afp/2002/0215/p653.html 3b