Figure 3: Placement of the ultrasound probe (left) for showing needle placement (arrows) in the muscles during dry needling (right). First row: probe position for needling lateral pterygoids (LP). From cheek towards tragus. AAM - anterior aspect of mastoid. Second row: probe over the mandible (M) for needling superficial (SM) and deep masseters (DM). Third row: probe over the sternocleidomastoid (SCM). Fourth row: probe position for needling temporalis (T). N, needle; CA carotid; ant SC, anterior scalene