Zygomatic bone shape in intentional cranial deformations: a model for the study of the interactions between skull growth and facial morphology
Year: 2016
Type: article
Abstract: Intentional cranial deformations (ICD) were obtained by exerting external mechanical constraints on the skull vault during the first years of life to permanently modify head shape. The repercussions of ICD on the face are not well described in the midfacial region. Here we assessed the shape of the zygomatic bone in different types of ICDs. We considered 14 non-deformed skulls, 19 skulls with antero-posterior deformation, nine skulls with circumferential deformation and seven skulls with Toulouse deformation. The shape of the zygomatic bone was assessed using a statistical shape model after mesh registration. Euclidian distances between mean models and Mahalanobis distances after canonical variate analysis were computed. Classification accuracy was computed using a cross-validation approach. Different ICDs cause specific zygomatic shape modifications corresponding to different degrees of retrusion but the shape of the zygomatic bone alone is not a sufficient parameter for classifying populations into ICD groups defined by deformation types. We illustrate the fact that external mechanical constraints on the skull vault influence midfacial growth. ICDs are a model for the study of the influence of epigenetic factors on craniofacial growth and can help to understand the facial effects of congenital skull malformations such as single or multi-suture synostoses, or of external orthopedic devices such as helmets used to correct deformational plagiocephaly.
Source: Journal of Anatomy
DOI: 10.1111/joa.12581
Institutions: Arts et Métiers, Assistance Publique – Hôpitaux de Paris, Pitié-Salpêtrière Hospital, Institut de Biomécanique Humaine Georges Charpak, Université Pierre-et-Marie-Curie, University of Freiburg, Centre National de la Recherche Scientifique, Muséum national d'Histoire naturelle, Éco-Anthropologie
Language: English
Subfield: Surgery
Field: Medicine
Domain: Health Sciences
Open Access status: bronze
OpenAlex ID: W2567594807