Abstract: Objective To explore the feasibility and outcome of segmental osteotomy in the treatment of the eyeball dystopia resulted from orbitalzygomatic fracture.Methods Among 26 cases of unilateral non-comminuted orbitozygomatic fractures,segmental osteotomy technique was used to depart the displaced orbitozygomatic complex.The fragment with contribution to lateral inferior orbital structure was mobilized upward and fixed.On the contrary,the fragment without contribution to the orbital structure was not mobilized.Results The volume of fractured orbit and the globe projection were adjusted considerably.Subjective assessment of the patients’ globe position displayed that 23 cases were satisfied with the outcome and 3 cases thought it acceptable.After 1 year follow-up,clinic appearances of ocular malposition and orbital deformity have been improved and retrieved efficiently.Conclusion Compared to the traditional methods,the segmental osteotomy as a simple technique with less dissection can reconstruct the orbital anatomic structure and restore globe position effectively.

Key words: Eyeball dystopia, Orbitozygomatic complex, Fracture, Segmental osteotomy