[Surgery of scoliosis. Decision aid by three-dimensional imaging (3D)]

Scoliosis is a spatial deformations of the spine not reducible to a plan. Usually perception of this phenomena is made from frontal and lateral radiographies and needs a mental process to construct a 3D form. The proposed aid-system consists, firstly, to construct a 3D model from digitalised characteristic points on radiographies, and to visualize this model from any point of view, even the above view. Secondly, corrective bending posture radiographies are used to estimate kinematic spine variables and then to simulate optimal orthopedic correction. Methods and materials are adaptable for other osteo-articular systems.