To facilitate the complete dissection of the fascia surrounding the sternocleidomastoid muscle the initial incision must be made as close to the posterior border of the muscle as possible (Fig. 5-7). The reason for this is that the fascia is more easily dissected off the sternocleidomastoid muscle in a forward direction. Making the incision close to the posterior border of the muscle leaves no remaining fascia to be dissected posteriorly and facilitates the complete isolation of the muscle from its surrounding fascia.
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