• Ayman Assi, Yasmina Chaibi, Ana Presedo, Jean Dubousset, Ismat Ghanem, and Wafa Skalli.
• Laboratoire de Biomécanique, Arts et Métiers ParisTech, Paris, France; Laboratory of Biomechanics, Faculty of Medicine, University of Saint-Joseph, Beirut, Lebanon; Gait and Motion Analysis Lab, SESOBEL, Beirut, Lebanon. Electronic address: ayman.assi@gmail.com.
• Eur J Radiol. 2013 Dec 1; 82 (12): 2359-64.

AbstractThe aim of this study is to explore the feasibility of 3D subject-specific skeletal reconstructions of lower limb in children using stereoradiography, and to assess uncertainty of clinical and anatomical parameters for children with cerebral palsy and for healthy children. The stereoradiography technique, using the EOS(®) system (Eos-imaging(®)), is based on the acquisition of two simultaneous digital anteroposterior and lateral X-rays, from head to feet in standing position and at low radiation dose. This technique allows subject-specific skeletal 3D reconstructions. Five children with cerebral palsy (CP) and 5 typically developing children (TD) were included in the study. Two operators performed the lower limb reconstructions twice. Tridimensional reconstructions were feasible for children over the age of 5 years. The study of reproducibility of anatomical parameters defining skeletal alignment showed uncertainties under 3° for the neck shaft angle, the femoral mechanical angle, and for the femoral and tibial torsions. The maximum degree of uncertainty was obtained for the femoral tibial rotation (4° for healthy children and 3.5° for children with CP).Copyright © 2013 Elsevier Ireland Ltd. All rights reserved.

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