Lacrimal Duct Obstruction Caused by Nasomaxillary Fracture: A Retrospective Analysis of Consecutive 12 Patients by Computed Tomographic Dacryocystography

Abstract

Nasomaxillary fracture is a characteristic mid-facial fracture, and there are no reports showing the fracture damaging the nasolacrimal system (NLS). This report described nasomaxillary fracture cases with NLS damages, which were assessed by computed tomographic dacryocystography (CT-DCG). A retrospective cohort study of nasomaxillary fractures diagnosed by CT was conducted from 2007 to 2015. Twelve patients (mean age: 27.5 years) were found, and their clinical symptoms were as follows: nasal deformity in 10 patients, infra-orbital hypoesthesia in 7, epiphora in 5, and diplopia in one. CT-DCG was performed for 2 patients who complained epiphora, and obstruction was found in 1 patient. All patients underwent open reduction and internal fixation (ORIF), and epiphora in 5 patients was improved. One patient, however, complained epiphora postoperatively, which was supposed to be due to the unsuitable screw insertion. Since nasomaxillary fracture could give NLS obstruction, CT-DCG is useful for diagnosis. Although ORIF is an optimal treatment, attention is needed to avoid the lacrimal canal in screwing on the nasomaxillary buttress.

A Three-dimensionally Printed Acrylonitrile Butadiene Styrene Model for the Reduction of Nasomaxillary Fracture

“…Nasomaxillary fracture induces not only aesthetic problems (including deviated nose, enophthalmos, and facial asymmetry), but also functional problems such as lacrimation due to lacrimal duct obstruction. 1 Although three-dimensional (3D) printing technology is now widely used in craniofacial surgery, 2 intraoperative 3D printing technology is never used for treating nasomaxillary fractures. This report describes the use of a 3D printed acrylonitrile butadiene styrene (3D-ABS) model for reducing and fixing a nasomaxillary fracture.…”