Prediction of Late Enophthalmos Using Preoperative Orbital Volume and Fracture Area Measurements in Blowout Fracture.

Enophthalmos caused by orbital volume expansion is the traditional indication for blowout fracture operation, but it may not appear immediately after orbital trauma due to periorbital swelling. The purpose of this study was to investigate the correlations of the orbital volume ratio (OVR) and, orbital fracture area (OFA) with the late enophthalmos measurement in unilateral pure blowout fracture. Seventy-two patients who had experienced a blowout fracture were divided into 2 groups, the conservative treatment group (n = 40) and the operative treatment group (n = 32). The authors measured the preoperative OVR and OFA using three-dimensional facial bone computed tomography and investigated their relationship with late enophthalmos that obtained 6 months after orbital trauma. In both conservative and operative groups, there were significant positive correlations between the OVR and OFA (P

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