Article

Analysis of preoperative flexibility in adolescent idiopathic
scoliosis (AIS) is essential to classify the curves, determine their
structurality, and select the fusion levels during preoperative planning.
Side-bending x-rays are the gold standard for the analysis of preoperative
flexibility. The objective of this study was to examine the feasibility and
performance of side-bending images taken in the standing position using the EOS
imaging system. METHODS:
All patients who underwent preoperative
assessment between April 2012 and January 2013 for AIS were prospectively
included in the study. The work-up included standing AP and lateral EOS x-rays of
the spine, standard side-bending x-rays in the supine position, and standing
bending x-rays in the EOS booth. The irradiation dose was measured for each of
the tests. Two-dimensional reducibility of the Cobb angle was measured on both
types of bending x-rays. RESULTS: The results were based on the 50 patients in
the study. No significant difference was demonstrated for reducibility of the
Cobb angle between the standing side-bending images with the EOS imaging system
and those in the supine position for all types of Lenke deformation. The
irradiation dose was five times lower during the EOS bending imaging. CONCLUSION:
The standing side-bending images in the EOS device contributed the same results
as the supine images, with five times less irradiation. They should therefore be
used in clinical routine.
LEVEL OF EVIDENCE: 2.
CI - Copyright (c) 2016 Elsevier Masson SAS. All rights reserved.

Langue : FRANCAIS