Abstract
In orbital reconstruction, a patient-specific implant (PSI) may provide accurate reconstruction in complex cases, since the design can be tailored to the anatomy. Several design options may be embedded, for ease of positioning and precision of reconstruction. This study describes a cohort of 22 patients treated for secondary orbital reconstruction with a PSI; one patient received two PSI. The preoperative clinical characteristics and implant design options used are presented. When compared to preoperative characteristics, the postoperative clinical outcomes showed significant improvements in terms of enophthalmos (P < 0.001), diplopia (P < 0.001), and hypoglobus (P = 0.002). The implant position in all previous reconstructions was considered inadequate. Quantitative analysis after PSI reconstruction showed accurate positioning of the implant, with small median and 90th percentile deviations (roll: median 1.3°, 90th percentile 4.6°; pitch: median 1.4°, 90th percentile 3.9°; yaw: median 1.0°, 90th percentile 4.4°; translation: median 1.4 mm, 90th percentile 2.7 mm). Rim support proved to be a significant predictor of roll and rim extension for yaw. No significant relationship between design options or PSI position and clinical outcomes could be established. The results of this study show the benefits of PSI for the clinical outcomes in a large cohort of secondary post-traumatic orbital reconstructions.
Original language | English |
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Pages (from-to) | 790-798 |
Number of pages | 9 |
Journal | International Journal of Oral and Maxillofacial Surgery |
Volume | 51 |
Issue number | 6 |
Early online date | 8 Nov 2021 |
DOIs | |
Publication status | Published - Jun 2022 |
Bibliographical note
Funding Information:Funding for this research was received by KLS Martin and Brainlab AG. None of the funding parties had any involvement in the contents or decision to submit the manuscript.
Publisher Copyright:
© 2021 The Authors
Funding
Funding for this research was received by KLS Martin and Brainlab AG. None of the funding parties had any involvement in the contents or decision to submit the manuscript.
Keywords
- Computer-assisted
- Modeling
- Orbital Fractures
- Patient-Specific
- Reoperation
- Surgery
- Treatment outcome