Zygomatic bone shape in intentional cranial deformations: a model for the study of the interactions between skull growth and facial morphology
Article dans une revue avec comité de lecture
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.
Files in this item
Related items
Showing items related by title, author, creator and subject.
-
Article dans une revue avec comité de lectureGIRINON, François; KETOFF, Serge; HENNOCQ, Quentin; KOGANE, Nicolas; ULLMANN, Nicolas; KADLUB, Natacha; GALLIANI, Eva; NEIVA-VAZ, Cécilia; VASQUEZ, Marie-Paule; PICARD, Arnaud; KHONSARI, Roman Hossein (Elsevier Masson, 2019)AIM AND SCOPE: Result assessment in cleft surgery is a technical challenge and requires the development of dedicated morphometric tools. Two cohorts of patients managed according to two different protocols were assessed ...
-
Article dans une revue avec comité de lectureIntroduction Craniosynostoses affect 1/2000 births and their incidence is currently increasing. Without surgery, craniosynostosis can lead to neurological issues due to restrained brain growth and social stigma due to ...
-
Article dans une revue avec comité de lectureGIRINON, François; EBRAHIMI, Shahin; DAGNEAUX, Louis; SKALLI, Wafa; ROUCH, Philippe; GAJNY, Laurent (Taylor & Francis, 2020)3D reconstruction from low-dose Bi-Planar X-Rays (BPXR) is a rising practice in clinical routine. However, this process is time consuming and highly depends on the user. This study aims to partially automate the process ...
-
Article dans une revue avec comité de lectureGIRINON, François; BAYOUD, Wael; LAHKAR, Bhrigu; BONNET-LEBRUN, Aurore; LAZENNEC, Jean-Yves; SKALLI, Wafa; ROUCH, Philippe; GAJNY, Laurent (Elsevier BV, 2022-03)Three-dimensional bone reconstructions from medical imaging are essential for biomechanical modelling and are growing tools in clinics. Several methods of lower limbs reconstruction from biplanar radiographs have ...
-
Article dans une revue avec comité de lectureBERG, Britt-Isabelle; LAVILLE, Aurélien; COURVOISIER, Delphine S.; SCHOUMAN, Thomas; ROUCH, Philippe (Public Library of Science, 2020)Methods We evaluated 48 biplanar radiographs from 12 patients (posteroanterior/lateral), originally taken for a scoliosis examination with a biplanar low-dose X-ray device. For this study, the images were further evaluated ...