title: Total Hip Prostheses in Standing, Sitting and Squatting Positions: An Overview of Our 8 Years Practice Using the EOS Imaging Technology.
abstract: More total hip arthroplasty (THA) is performed worldwide and especially in younger and more active patients compared to earlier decades. One of the focuses of THA research in the future will be on optimizing the radiological follow-up of these patients using 2D and 3D measurements of implants position while reducing the radiation dose delivered. Low-dose EOS(®) imaging is an innovative slot-scanning radiograph system providing valuable information in patient functional positions (standing, sitting and even squatting positions). EOS has been proven accurate and reliable without significant inconvenience caused by the metallic artifacts of implants. The ability to obtain precise data on implant orientation according to the patient posture opens new perspectives for a comprehensive analysis of the pelvic frontal and sagittal balance and its potential impact on implants function and failures. We report our 8 years experience on our first 300 THA patients using this technology routinely for pre and post op evaluation. Our results will be compared and confronted with the actual literature about this innovative technology. We shall especially emphasize our experience about patients with abnormal posture and the evolution of the subject over time, because the phenomenon of an aging spine is frequently associated with the process of aging hips.
authors: Department of Orthopaedic and Trauma Surgery, Pitié-Salpétrière Hospital, Assistance Publique - Hopitaux de Paris, UPMC, 47-83 Boulevard de l'hôpital, 75013 Paris, France ; BiomechanicsLab (LBM), Arts et Metiers Paris-Tech, Paris, France ; Department of Anatomy, UPMC, 105 Boulevard de l'hôpital, 75013 Paris, France.
authors: Jean-Yves
authors: JY
authors: Lazennec
authors: BiomechanicsLab (LBM), Arts et Metiers Paris-Tech, Paris, France ; Department of Orthopaedic and Trauma Surgery, Avicenne Hospital, Assistance Publique - Hopitaux de Paris, 125 rue de Stalingrad, 93009, Bobigny, France.
authors: Marc-Antoine
authors: MA
authors: Rousseau
authors: Department of Anatomy, UPMC, 105 Boulevard de l'hôpital, 75013 Paris, France.
authors: Adrien
authors: A
authors: Brusson
authors: RIM Maussins-Nollet 114 rue Nollet 75017 Paris, France.
authors: Dominique
authors: D
authors: Folinais
authors: Department of Anatomy, UPMC, 105 Boulevard de l'hôpital, 75013 Paris, France.
authors: Maria
authors: M
authors: Amel
authors: Loma Linda University Medical Center, Director Peterson Research Center at Loma Linda University, California, USA.
authors: Ian
authors: I
authors: Clarke
authors: Department of Orthopaedic Surgery, University of Michigan, Ann Arbor, Michigan, USA.
authors: Aidin Eslam
authors: AE
authors: Pour
keywords: EOS imaging; cup anteversion; femoral offset; hip spine relation; limb length; pelvic obliquity; pelvic rotation; pelvic tilt; sagittal balance; sitting position; standing position; total hip arthroplasty (THA).