| Summary: | Contemporary advances in technology have allowed the transfer of knowledge from industrial laser melting systems to surgery; such an approach could increase the degree of accuracy in orbital restoration. The aim of this study was to examine the accuracy of selective laser melted PSIs (patient-specific implants) and navigation in primary orbital reconstruction. Ninety-six patients with orbital fractures were included in this study. Planned vs. achieved orbital volumes (a) and angles (b) were compared to the unaffected side (<i>n</i> = 96). The analysis included the overlay of post-treatment on planned images (iPlan 3.0.5, Brainlab<sup>®</sup>, Feldkirchen, Germany). The mean difference in orbital volume between the digitally planned orbit and the postoperative orbit was 29.16 cm<sup>3</sup> (SD 3.54, presurgical) to 28.33 cm<sup>3</sup> (SD 3.64, postsurgical, t = 5.00, df = 95.00; <i>p</i> < 0.001), resulting in a mean volume difference (planned vs. postop) of less than 1 cm<sup>3</sup>. A 3D analysis of the color mapping showed minor deviations compared to the mirrored unaffected side. The results suggested that primary reconstruction in complex orbital wall fractures can be routinely achieved with a high degree of accuracy by using selective laser melted orbital PSIs.
|
|---|