 | Internal Orbital Fractures |
Figure 2 : Orbital floor blow-out fracture. Note the disruption of left orbital floor in a “trap-door” configuration, hinged along medial fracture line near osteomeatal infundibulum and deflected more inferiorly on lateral aspect (arrow). The latter may permit a one-way extension of extraconal fat, or fat with muscle, much like a child's “Chinese finger trap” toy; either configuration may lead to clinical diagnosis of “entrapment.” Note orbital emphysema (hatched arrows), predominantly extraconal in this case. There is also extensive soft tissue emphysema (asterisks) which presumably spread from fracture site, through orbit, and then superficially.
Disruption of left orbital floor in a “trap-door” configuration (Fig. 2)
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