Anne-Laure Simon, Audrey Angelliaume, Adèle Happiette, Maxime Huneidi, Florence Julien-Marsollier, Brice Ilharreborde

December 2021, Volume 30, Issue 12, pp 3540 - 3549 Original Article Read Full Article 10.1007/s00586-021-06986-y

First Online: 06 September 2021


Definitive fusion can be considered in early onset scoliosis (EOS) around triradiate cartilage closure. Halo-gravity traction (HGT) is an old strategy that can help lengthen and balance the spine before fusion. The postoperative changes of the trunk have never been investigated to date with modern imaging. The goal of this study was to analyze the 3D radiological outcomes, and the associated pulmonary function, of a cohort of severe EOS patients treated by definitive posterior fusion prepared by HGT.


All consecutive EOS patients with severe (> 85°) and stiff (flexibility 


Forty-nine EOS patients underwent fusion, with a mean follow-up of 4 years (± 1). Age at surgery averaged 13.5 years old. HGT protocol reached on average 41% of body weight. Mean preoperative 3D Cobb angle was 95° (± 10) and final correction averaged 68.4% after surgery. 3D T4T12 kyphosis was reduced after surgery (11°, p 


HGT is a safe and efficient strategy to prepare posterior fusion in severe EOS patients. The 3D trunk analysis demonstrated significant postoperative gains in thoracic and spinal lengths, as well as in thoracic volume.

Level of evidence


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