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

Figure 1

Ex vivo dry needling with solid needle in normal healthy LAL muscle. (a) Three punctures were performed in the innervation area of the muscle. Note that few muscle fibers are injured, and the needle sets many of them a side (initial magnification: 100x). (b) Detail of a puncture. The SEM image is an example of a solid needle habitually used for acupuncture and dry needling (diameter of 250 μm). Arrowheads, muscle fiber injury points. Two images are on the same scale (scale bar: 50 μm).

(a)

(b)