Software-based video analysis of functional outcomes of face transplantation

Microsurgery
Sebastian FischerBohdan Pomahac

Abstract

Assessment of outcomes after face transplantation (FT) is necessary to provide sound evidence on the benefits of this life-giving surgery. Current methods for outcomes assessment, however, are imprecise or prone to subjectivity. Software-based video analysis may allow fast, objective and retrospective assessment of restoration of facial movements and functions after FT. We recorded videos of 7 subjects before as well as every 3-6 months after facial transplantation. Patients performed the same sequence of facial movements in every video: smile, open mouth, purse lips, wrinkle nose, frown, close eyes, and lift eyebrows. The videos were retrospectively analyzed using EMOTIENT software, which is capable of automatic tracking and detailed measurements of facial movements and expressions. These measurements were subsequently compared to the same patient at different time points, as well as to the normal population. Open mouth, wrinkle nose and smile functions significantly improved in all patients when compared to pre-transplant functions; this improvement was significant at 3, 6, and 12 months after transplant, respectively. Lip purse, eye closure and frown functions improved by 6, 9, and 18 months after transplantation, respective...Continue Reading

References

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Citations

Oct 23, 2020·Journal of Burn Care & Research : Official Publication of the American Burn Association·Kelsey M GrayPeter Dziewulski
Dec 31, 2020·Journal of Burn Care & Research : Official Publication of the American Burn Association·Laura C SiegwartSebastian Fischer
Sep 2, 2021·Journal of Reconstructive Microsurgery·Miguel I DoranteBohdan Pomahac
Jan 29, 2022·Plastic and Reconstructive Surgery·Daniel BoczarEduardo D Rodriguez
Jan 29, 2022·Plastic and Reconstructive Surgery·Thanapoom BoonipatSamir Mardini

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