title: A radiolucent chair for sitting-posture radiographs in non-ambulatory children: use in biplanar digital slot-scanning.
abstract: EOS imaging (EOS System; EOS imaging, Paris, France) enables fast 2-D/3-D imaging of children in standing load-bearing position. Non-ambulatory children with neuromuscular scoliosis need evaluation of their spinal balance while in a normal daily position. We designed a customized chair fitting the EOS patient-area dimensions to obtain images in natural sitting postures. The chair is a 360° rotating orthopaedic chair made of fully radiolucent polyethylene and equipped with an adjustable headrest and three-point belts. Out of 41 consecutive patients, 36 (88%, 95% confidence interval 74-96%) had successful imaging. In most patients with severe neuromuscular trunk deformities, the EOS system combined with our chair was useful for assessing preoperative trunk collapse, pelvic obliquity and postoperative corrections in all planes. This specific device changed our daily practice for the assessment of spinal deformities in non-ambulatory patients.
authors.affiliation: Armand Trousseau Hospital, Department of Pediatric Orthopaedics, Université Pierre et Marie Curie-Paris 6, 26 avenue du Dr Arnold Netter, 75571, Paris Cedex 12, France.
authors.forename: Houssam
authors.initials: H
authors.lastname: Bouloussa
authors.affiliation: Armand Trousseau Hospital, Department of Pediatric Orthopaedics, Université Pierre et Marie Curie-Paris 6, 26 avenue du Dr Arnold Netter, 75571, Paris Cedex 12, France.
authors.forename: Arnaud
authors.initials: A
authors.lastname: Dubory
authors.affiliation: Groupe Lagarrigue, Clichy, France.
authors.forename: Catherine
authors.initials: C
authors.lastname: Seiler
authors.affiliation: Armand Trousseau Hospital, Department of Pediatric Imaging, Université Pierre et Marie Curie-Paris 6, Paris, France.
authors.forename: Baptiste
authors.initials: B
authors.lastname: Morel
authors.affiliation: Armand Trousseau Hospital, Department of Pediatric Orthopaedics, Université Pierre et Marie Curie-Paris 6, 26 avenue du Dr Arnold Netter, 75571, Paris Cedex 12, France.
authors.forename: Manon
authors.initials: M
authors.lastname: Bachy
authors.affiliation: Armand Trousseau Hospital, Department of Pediatric Orthopaedics, Université Pierre et Marie Curie-Paris 6, 26 avenue du Dr Arnold Netter, 75571, Paris Cedex 12, France. raphael.vialle@trs.aphp.fr.|The MAMUTH Hospital-University Department for Innovative Therapies in Musculoskeletal Diseases, Armand Trousseau Hospital, Paris, France. raphael.vialle@trs.aphp.fr.
authors.forename: Raphaël
authors.initials: R
authors.lastname: Vialle
mesh_terms: D000293:Adolescent; D002648:Child; D004867:Equipment Design; D006801:Humans; D021621:Imaging, Three-Dimensional / Q000295:instrumentation*; D010388:Pelvis / Q000000981:diagnostic imaging*; D011187:Posture; D011829:Radiation Dosage; D011859:Radiography / Q000295:instrumentation*; D012600:Scoliosis / Q000000981:diagnostic imaging*; D013131:Spine / Q000000981:diagnostic imaging*
keywords: Children; EOS imaging; Neuromuscular scoliosis; Non-ambulatory patients; Pelvic obliquity; Radiographic equipment; Reduced-dose imaging; Sitting position