Microorbitalism: a technique for orbital rim expansion.
A simple technique for orbital aperture expansion to facilitate placement of ocular prostheses is described. Both superolateral and inferolateral orbital margins are released by means of a single burr hole craniectomy of the frontosphenoid bone behind the orbital process of the frontal bone. Vertical and horizontal marginal lengthenings are performed by a rotatory displacement of one bone segment alongside the other. The expanded osseous aperture is secured with wire and plate-and-screw fixation following a supraorbital rim craniectomy to allow an adequate fit. The result provides for easier access of ocular prostheses and tissue expanders. The method has been applied to a series of patients with microorbitalism due to unilateral or bilateral congenital anophthalmia over the past 3 years without complication and with excellent results. Three-dimensional re-formatted CT reconstructions of the craniofacial skeleton are shown preoperatively and postoperatively.
Elisevich
K
K
Department of Clinical Neurological Sciences, Victoria Hospital, London, Ont., Canada.
Bite
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Colcleugh
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D002675:Child, Preschool; D006801:Humans; D007091:Image Processing, Computer-Assisted; D008722:Methods; D009915:Orbit / Q000002:abnormalities / Q000000981:diagnostic imaging / Q000601:surgery*; D011859:Radiography; D015626:Tissue Expansion