Evaluation of the navigation system for orbital wall reconstruction in unilateral orbital fractures / 中华口腔医学杂志
Chinese Journal of Stomatology
;
(12): 657-661, 2012.
Artículo
en Chino
| WPRIM
| ID: wpr-260215
ABSTRACT
<p><b>OBJECTIVE</b>To evaluate the efficiency of navigation system for orbital wall reconstruction in unilateral orbital fractures.</p><p><b>METHODS</b>Fifteen patients (7 male and 8 female) with unilateral orbital fracture underwent orbital reconstruction with the help of intraoperative navigation system. The average age was 34.3 ± 9.5 years. All patients underwent spiral CT scanning preoperatively, and the CT data was imported to the BrainLab navigation system (Germany, BrainLab company). The orbit of the intact side was mirrored to the opposite side as the reference for pre-operative planning. The titanium mesh was mounted on the resin template made by rapid prototyping machine based on the mirrored CT data. When the injury was limited, the hydroxyapatite sheet was used for the orbital wall reconstruction. During the operation, the real-time navigation helped to ensure precise placement. The re-establishing result was assessed based on the postoperative CT data with the following four variables the volumetric difference between the bilateral orbit, the volume of the herniated soft tissue, the global projection and the discrepancy between the simulated and the achieved position of the reconstructed orbital wall. The reconstructive discrepancy was measured only in the titanium plate grafting cases.</p><p><b>RESULTS</b>There were no serious complications such as infection, graft rejection and optic nerve injury in any case. Preoperatively, the average degree of enophthalmos was (3.5 ± 1.6) mm, the average volumetric difference between the injured and the unaffected orbit was (4.5 ± 1.8) ml, and the average volume of the herniated orbital soft tissue was (2.1 ± 0.7) ml. Postoperatively, the three values were respectively reduced to (1.3 ± 0.6) mm, (1.8 ± 0.9) ml and (0.7 ± 0.3) ml. The discrepancy of the medial and inferior wall were (2.5 ± 0.6) mm and (2.1 ± 0.4) mm.</p><p><b>CONCLUSIONS</b>The intraoperative use of navigation system for the orbital wall reconstruction in unilateral orbital fractures can provide reliable accuracy and achieve satisfactory results.</p>
Texto completo:
Disponible
Índice:
WPRIM (Pacífico Occidental)
Asunto principal:
Órbita
/
Fracturas Orbitales
/
Cirugía General
/
Mallas Quirúrgicas
/
Titanio
/
Simulación por Computador
/
Diagnóstico por Imagen
/
Tomografía Computarizada por Rayos X
/
Enoftalmia
/
Procedimientos de Cirugía Plástica
Tipo de estudio:
Estudio diagnóstico
/
Estudio pronóstico
Límite:
Adulto
/
Femenino
/
Humanos
/
Masculino
Idioma:
Chino
Revista:
Chinese Journal of Stomatology
Año:
2012
Tipo del documento:
Artículo
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