... across the forehead from one superior temporal line to the other. The tension through periosteum should be 3 to 4 cm superior to the orbital rims. 75 Figure 6- 10 Draping of the patient and the ... and inferior to where the artery pierces the medial orbital wall. With a periosteal elevator on each side of the foramen, retraction allows the periosteum attached to the foramen to "tent" ... at it insertsinto the coronoid process. Another approach is to perform an osteotomy of the zygomatic arch,leaving it pedicled to the masseter muscle, and to dissect between the masseter and...