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  • Title: Orbital Volume Correction in Orbital Floor Fractures: A Comparison of Transorbital and Transantral Techniques.
    Author: Dennis P, Govind A, Demirel S, Amundson M.
    Journal: J Oral Maxillofac Surg; 2020 Mar; 78(3):430.e1-430.e7. PubMed ID: 31794695.
    Abstract:
    PURPOSE: We compared the accuracy of orbital volume correction between the transorbital and transantral reconstructive techniques. MATERIALS AND METHODS: A retrospective cohort study was performed of patients who had undergone repair of isolated, unilateral orbital floor blowout fractures at Legacy Emanuel Hospital from 2013 to 2018. A total of 21 patients were identified and included in the predictor variable cohorts of the transorbital versus transantral repair technique. The outcome variable of orbital volume correction was evaluated by comparing the volume of the postoperative repaired orbits with that of the contralateral noninjured orbits. Additional ordinal variables analyzed included the preoperative orbital defect size and analysis of the transantral cohort stratified by the plating technique used. Data were assessed using analysis of variance and paired t tests. RESULTS: A transantral approach was used for orbital repair in 9 patients. In these patients, the postoperative orbital volume in the injured orbit was 2.69% greater than that in the uninjured orbit. The 12 patients who had undergone transantral repair had a postoperative orbital volume in the injured orbit that was 0.56% smaller than that of the uninjured orbit (P = .033). Division of the transantral cohort into 2 different plating techniques identified a less than 1% difference in mean orbital volume correction between the 2 techniques (P = .104). The average defect volume before transorbital repair was 4.87 cm3 compared with 5.22 cm3 for transantral repair (P = .907). CONCLUSIONS: The results from the present study have shown that the accuracy of orbital volume correction using the transantral approach will be comparable to that of the transorbital approach, as shown by a small, but statistically significant, increased accuracy in the volume correction with the transantral approach. Additional investigation to establish clinical correlations with these findings should be conducted.
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