Dry Needling Produces Mild Injuries Irrespective to Muscle Stiffness and Tension in Ex Vivo Mice Muscles

Figure 2

Ex vivo dry needling in LAL muscle with fibers with contraction knots. (a) Thirty minutes after a subcutaneous administration of neostigmine, the muscle shows several knots of contraction (arrows). (b) Several repeated punctures on the muscle were performed. Note that punctures were not performed at the same point. The needle separates many muscle fibers, and many others are injured (initial magnification: 100x). (c) Details of a puncture. Vessels and nerves in the puncture site can be seen without injury (initial magnification: 200x). Erythrocytes circulating through the vessel can be seen (d) (initial magnification: 400x). (e) Another example of puncture showing an intramuscular nerve without injury (initial magnification: 400x).

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