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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.
Artigo em Chinês | 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>
Assuntos
Texto completo: DisponíveL Índice: WPRIM (Pacífico Ocidental) Assunto principal: Órbita / Fraturas Orbitárias / Cirurgia Geral / Telas Cirúrgicas / Titânio / Simulação por Computador / Diagnóstico por Imagem / Tomografia Computadorizada por Raios X / Enoftalmia / Procedimentos de Cirurgia Plástica Tipo de estudo: Estudo diagnóstico / Estudo prognóstico Limite: Adulto / Feminino / Humanos / Masculino Idioma: Chinês Revista: Chinese Journal of Stomatology Ano de publicação: 2012 Tipo de documento: Artigo

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Texto completo: DisponíveL Índice: WPRIM (Pacífico Ocidental) Assunto principal: Órbita / Fraturas Orbitárias / Cirurgia Geral / Telas Cirúrgicas / Titânio / Simulação por Computador / Diagnóstico por Imagem / Tomografia Computadorizada por Raios X / Enoftalmia / Procedimentos de Cirurgia Plástica Tipo de estudo: Estudo diagnóstico / Estudo prognóstico Limite: Adulto / Feminino / Humanos / Masculino Idioma: Chinês Revista: Chinese Journal of Stomatology Ano de publicação: 2012 Tipo de documento: Artigo