Page 91 - Advanced concepts in orbital wall fractures

Feldkirchen, Germany) to make a virtual reconstruction. The optimal position for the implant was calculated by a technician and two surgeons based on the STL file and both preoperative scans.
As described in earlier studies, the accuracy of the positioned implant was calculated by the Orbital Implant Positioning Frame (OIPF)23. The positioned implant was superimposed onto the planned implant and differences in translation and rotations (pitch, yaw, and roll) were calculated (Fig. 2).
C5 Figure 2 Rotations of the implant: pitch, yaw, and roll.
Statistical analysis
We used IBM SPSS Statistics (version 25.0; IBM Corp., Armonk, NY, USA) for statistical analysis. Descriptive statistics were used for the number of scans and the reason for altering the position of the implant. For all implants the mean (standard deviation) difference of pitch, yaw, roll, and translation of the ideal position were compared with the intraoperative position. Intersurgeon and intrasurgeon variability were calculated using the intraclass correlation coefficient (ICC). The paired t test was used
Intraoperative imaging
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