Diagnostic and Clinical Value of CT in Orbital Blowout Fracture

Objective To analyze the displays of CT of orbital blowout fracture and discuss the diagnostic value of CT in orbital blowout fracture.Methods Thirty patients with orbital blowout fracture were scanned with coronal and axial CT scan technique.According to the images analysis and clinical data,26 patients were treated conservatively only 4 were operated.Results Interruption of bone continuity,fragments,depression and displacement of orbital bone wall were direct signs of orbital blowout fracture.“Tear drop” sign in the maxillary or ethmoid sinuses was a characteristic indirect sign of inferior or medial orbital wall fracture.Enophthalmos obviously compacting of extraocular muscler and positive distraction test were the operation signs.Conclusion Orbital blowout fracture can be diagnosed by CT comprehensively and accurately,which is very important in choosing the treatment methods for orbital blowout fracture.