ePlasty: Vol. 11
Identity Transfer and Identity Restoration in Facial Allotransplantation
Ajay Modgil, MD

Home Clinic, Vikas Nagar, Una 174303, Himachal Pradesh, India

Correspondence: ajaymodgil@ymail.com

Objective: Facial allotransplantation is fast becoming a reconstructive option for severely disfigured individuals, but it is still in experimental stage. Facial allotransplantation will be considered fully ethical only when it addresses the recipient's identity concerns. There exist no such studies that quantify and predict identity changes following change in geometry of underlying facial skeleton and overlying soft tissue morphology. I objectively address these identity concerns in the present study. Methods: Using software (Mimics version 14.0, Materialise, Plymouth, Michigan), I developed 3-dimensional facial models from the computed tomographic images of 4 identical and 1 nonidentical twin pairs. On the basis of cranial base anatomy, 3-dimensional coordinate values of selected landmark locations were measured (Surgicase, Materialise, Plymouth, Michigan) and a morphometric method was applied to quantify identity differences between them. Identity parameters were drawn on a diagrammatic chart that depicted the biophysical identity range. Using software (Mimics version 14.0), facial allotransplant simulation was done involving most of the nasal bone, maxilla, and zygoma. Morphological parameters of resulting new identity were drawn on diagrammatic chart and if they fell within the chart, facial allotransplantation resulted in identity transfer. Moreover, a scal .......