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The aim of the study was to assess the mid-term effectiveness and safety of an original technique consisting of reconstructing fractures of the medial wall of the orbit with porous polyethylene implants with an exclusive transnasal approach. Twenty-five patients were treated. Each patient underwent a pre-operative ophthalmologic evaluation and a CT scan. The surgery started with an anteroposterior ethmoidectomy of the fractured side; all the fractured bone fragments were removed and all usual landmarks of healthy bony margins were identified. A Medpor sheet was placed endoscopically to reconstruct the fractured wall. Each patient received an immediate postoperative CT scan, and was evaluated at day 1, 7, 30 and 6 months after surgery clinically and with an endoscopic examination. In all patients, preoperative enophthalmos and/or diplopia were corrected. The CT scans showed excellent reconstruction of the fractured bony walls. The immediate postoperative period was characterized by a very high degree of subjective comfort. No perioperative complications were detected. At the 6 months follow up, all meshes appeared covered by epithelialized mucosa at the endoscopic inspection, and clinical results were stable. Scars or lid complications are always prevented. The technique described has become the standard to treat medial wall fractures in our department.

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