Abstract
To describe the utilization of customized made-to-specification porous polyethylene implants and to evaluate clinical characteristics and outcomes of patients who received these implants for unilateral orbital defects. A retrospective review of 9 patients was performed. Three-dimensional surface models were generated from high-resolution computed tomography scans. Orbital constructs were modeled after the normal, contralateral orbits and mirrored across the vertical midline to generate the target orbital implant. Measured outcomes included globe position, extraocular motility, facial symmetry, and diplopia. Patients ranged 25-56 years old (mean: 37) and included 6 males and 3 females. Cases consisted of 6 orbital floor fractures due to trauma, 1 lateral wall defect after neurofibroma resection, 1 floor/medial wall defect after myxoma resection, and 1 superior orbital rim defect after intraosseous hemangioma resection. Seven patients had ≥1 prior repair. All patients had previous hard and soft tissue defects and varying degrees of restrictive globe motility. Patients exhibited improved ductions after implant placement and improved facial appearance and symmetry. Post-operatively, 1 patient was found to have a small orbital hematoma between the implant and orbital floor, resolving within weeks. Precision, personalized oculofacial surgery is the next wave in tailoring surgical care to the individual patient. Customizable implants are manufactured to specifically mold to an individual patient's unique bony architecture, which can lead to superior outcomes in reconstructing orbital and craniofacial bony defects. This technique is particularly useful in patients with prior unsuccessful repair.
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