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Intra and inter-observer reliability of determining degree of pelvic obliquity in neuromuscular scoliosis using the EOS-CHAIR® protocol

Article dans une revue avec comité de lecture
Author
ARVIEU, Robin
104786 Université Paris-Sud - Paris 11 - Faculté de médecine [UP11 UFR Médecine]
DUBORY, Arnaud
BACHY, Manon
VIALLE, Raphaël
ROUISSI, Jihane
ccVERGARI, Claudio
37861 Biomécanique et Pathologie Locomotrice du Cheval [BPLC]
34256 École nationale vétérinaire d'Alfort [ENVA]
169802 University of Exeter
99538 Laboratoire de biomécanique [LBM]

URI
http://hdl.handle.net/10985/11881
DOI
10.1007/s00381-016-3326-5
Date
2017
Journal
Child's Nervous System

Abstract

Purpose Scoliosis with pelvic obliquity (PO) could be investigated with the EOS-CHAIR protocol as the most common deformity especially in patients with trunk hypotonia and quadriplegia. However, the intra-observer and inter-observer reliability of various angles assessing PO was not investigated with this new imaging protocol. Methods A retrospective cohort of 36 EOS frontal fullspine acquisitions made in sitting position was used. The sacroiliac pelvic obliquity angle, iliac crest pelvic obliquity angle, and ischiatic pelvic obliquity angle were assessed in an intra-observer and inter-observer study. Results The use of the EOS-CHAIR protocol was implemented satisfactory with a high acceptance rate by all caregivers and patients and their families. Intra-observer and inter-observer reliability was excellent for the three tested angular measurements. Discussion As for idiopathic scoliosis, we postulate the EOS system as being superior to standard radiographs to assess 3D spinal deformities in neuromuscular conditions. The EOS-CHAIR protocol improves preoperative comprehension of the lumbosacral junction anatomy in patients with poor standing or sitting postures. Our results show a very high reliability of three different angular measurements of the frontal pelvic obliquity in sitting position. Then it is possible to use one of these three angles as well as the others to assess frontal pelvic obliquity in neuromuscular patients. This frontal pelvic obliquity protocol in sitting position with the EOS-CHAIR is a validated measurement technique that needs to be used now to measure PO as a critical parameter of the global trunk balance in neuromuscular patients.

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