Hirsch C, Ilharreborde B, Mazda K
Service de chirurgie orthopédique et traumatologique, hôpital Pitié-Salpêtrière, université Pierre-et-Marie-Curie, 75013 Paris, France.
Service de chirurgie orthopédique infantile, hôpital Robert-Debré, université Paris-Diderot, 75019 Paris, France.
Orthop Traumatol Surg Res. 2016 Jun;102(4):495-500. doi: 10.1016/j.otsr.2016.01.021. Epub 2016 Apr 16.
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.
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.
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.
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.
分析青少年特发性脊柱侧凸（AIS）的术前柔韧性对于曲线分类、确定其结构性以及在术前规划中选择融合节段至关重要。侧弯X线片是术前柔韧性分析的金标准。本研究的目的是检验使用EOS成像系统在站立位拍摄侧弯图像的可行性和性能。
前瞻性纳入2012年4月至2013年1月期间因AIS接受术前评估的所有患者。检查包括脊柱的站立前后位和侧位EOS X线片、标准仰卧位侧弯X线片以及在EOS检查室拍摄的站立位侧弯X线片。测量每次检查的辐射剂量。在两种类型的侧弯X线片上测量Cobb角的二维可矫正性。
结果基于研究中的50例患者。对于所有类型的Lenke畸形，EOS成像系统的站立位侧弯图像与仰卧位侧弯图像在Cobb角可矫正性方面无显著差异。EOS侧弯成像期间的辐射剂量低五倍。
EOS设备的站立位侧弯图像与仰卧位图像效果相同，但辐射少五倍。因此，它们应应用于临床常规。
2级。
