Abstract
Fracture of the orbital floor (57.4%) can occur from zygomatico-maxillary complex fracture in middle third facial skeletal injuries. However, isolated orbital floor fracture-the term coined as ‘blow out fracture’ represents upto 21.4% [1]. Anatomically, the antero-medial 3rd of the floor is formed by orbital surface of maxilla, where as the postero-medial part is formed by palatine bone and lateral 3rd is formed by zygoma. The medial wall of the orbit is formed anterior to posterior, by frontal process of the maxilla behind its lacrimal crest, lacrimal bone, orbital plate of ethmoid and body of sphenoid. The ‘blow out’ fracture of orbit usually involves the medial wall and floor of the orbit being the thinnest. Absolute indications for reconstruction of orbital floor are diplopia with muscle entrapment, enopthalmos and large defect [2]. Many materials have been described for the reconstruction of orbital floor defects with varying rate of success. They include autogenic, allogenic and alloplastic material. This article reports management of a case of orbital blow-out fracture using autogenous iliac crest bone graft to reconstruct the defect of the orbital floor.
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