Extensive knowledge of the depth and course of blood vessels circulating in or nearby the midface area, along with their anatomical variations, is paramount to minimize the risk of complications associated with vascular injuries. Based on the usual course of essential neurovascular structures, we propose to rely on 2 anatomical lines, respectively running from the medial canthus to the mandibular angle (the mid-cheek safety line) and descending vertically from the middle of the zygomatic arch (the lateral safety line) (Figure 2).
Vascular dangers of the midface and proposed safety lines delineating a relatively avascular area. 1, facial artery; 2, infra orbital foramen; 3, superficial temporal artery; 4, transverse facial artery; 5 facial vein 6, mid cheek safety line; 7, lateral safety line.
