Orbital roof fractures in childhood.

The authors documented 36 orbital roof fractures in 32 children over a 5-year period. With the aid of computed tomography (CT), 16 fractures were classified as isolated and 20 were found to be associated with more extensive damage to the skull. Isolated fractures typically occurred in younger children (mean age, 2.8 years) after relatively minor trauma, most often a fall from a height of less than 10 feet. Birth trauma was the cause in one case. Three fourths of the isolated fractures were linear; with extensive trauma, the orbital roof was usually comminuted. Upper eyelid hematoma characteristically developed hours after the traumatic event. There were no significant chronic disturbances of vision, motility, or lid function. Acute neurologic concerns were common, and two patients died, but full recovery was otherwise the rule. In two cases, late development of ocular pulsation led to CT demonstration of encephaloceles. Both of these children had comminuted roof fractures with displacement of bone fragments into the orbit. The authors conclude that fracture of the orbital roof is a common but frequently overlooked occurrence in childhood. Anatomic factors may account for differences in the effect of frontal impact at different ages.