Introduction: The etiology of post-traumatic orbital deformities is most frequently due to impossibility of an immediate surgical treatment because of any systemic pathology that may represent a life risk. It may be possible to achieve a suitable surgical result pursuing the following aims: restoration of the threedimensional structure of the orbit, soft tissue correction and eventually restoration of lost tissues with autologous or similar ones. In the correction of post-traumatic orbital sequelae, many surgical options exist: osteotomies, reconstructive and camou- ﬂage techniques using alloplastic material or bone grafts and soft tissues restoration. The aim of this study is to evaluate if the use of stereolithographic models in the pre-operative planning allows an accurate evaluation of the orbital defect or alteration and makes the surgical planning and intraoperative steps easier and more predictable. Material and Methods: Five patients affected by post-traumatic orbital sequelae, both aesthetic and functional, were surgically treated. In order to achieve an accurate pre-operative diagnosis, conventional X-rays, TC multi-slice with three-dimensional reconstructions and then the fabrication of custom stereolithographic models were performed. Results and Conclusions: The use of stereolithographic models in the preoperative planning allows an accurate evaluation of the volumetric orbital defect or alteration; it makes the surgical planning easier because many choices, usually made during surgery, can be done during the aforementioned planning. We refer to timing and modality of the osteotomies, reallignament of bony segments after osteotomy, pre or intraoperative moulding of the osteo-synthesis plates and pre-fabrication, using a template, of autologous or alloplastic grafts.
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