Important of two and three-dimensional CT reconstruction in orbital blowout fracture

Objective To explore the importantce two-dimensions and three-dimensional CT reconstruction in surgical treatment for orbital blow-out fracture.Methods According to two-dimensional and three-dimensional imaging,MEDPOR orbital implants and HA as orbital grafting material were used.Reconstruction of the orbit and reposition of the globe perfomed on 39 patients with orbital blow-out fracture.Postoperatively,they were followed up for average of 3 months. Results Two-dimensional imaging was very clear in showing soft tissue herniation and soft tissue entrapment.MPR and 3D-CT was clear in showing the stereo conformation of orbit.In the 39 cases with enophthalmos of orbital blow-out fracture,three months after operation,the measurements demonstrated that 33 patients had no enophthalmos,4 cases had mild enophthalmos(1-2 mm).34 of 39 patients had diplopia preoperatively,30 patients had satisfactory results. Conclusions Two and three-dimensional CT reconstruction provides satisfactory understanding of the orbital fracture,it permits a more specific preoperative analysis and surgical planning and they are the ideal guides during the operation.