Prediction of clinical height gain from surgical posterior correction of idiopathic scoliosis
Article dans une revue avec comité de lecture
OBJECTIVE: The best predictors of height gain due to surgical correction are the number of fused vertebrae and the degrees of the corrected Cobb angle. Existing studies of predictive models measured the radiographic spinal height and did not report the clinical height gain. The aims of this study were to determine the best predictive factors of clinical height gain before surgical correction, construct a predictive model using patient population data for machine learning, and test the performance of this model on a validation population.METHODS: The authors reviewed 145 medical records of consecutive patients who underwent surgery that included placement of posterior spinal instrumentation and fusion for idiopathic scoliosis between 2012 and 2016. Standing and sitting clinical heights were measured before and after surgery in patients who had been surgically treated under similar conditions. Multivariate analysis was then performed and the results were used to develop a predictive model for height gain after surgery. The data from the included patients were randomly assigned to a learning set or a test set. RESULTS : In total, 116 patients were included in the analysis, for whom the average postoperative clinical height gain in a standing position was 4.2 ± 1.8 cm (range 0–11 cm). The best prediction model was calculated as follows: standing clinical height gain (cm) = 1 − 0.023 × sitting clinical height (cm) − 0.19 × Risser stage + 0.058 × Cobb preoperative angle (°) + 0.021 × T5–12 kyphosis (°) + 0.14 × number of levels fused. In the validation cohort, 91% of the predicted values had an error of less than one-half of the actual height gain.CONCLUSIONS: This predictive model formula for calculating the potential postoperative height gain after surgical treatment can be used preoperatively to inform idiopathic scoliosis patients of what outcomes they may expect from posterior spinal instrumentation and fusion (taking into account the model’s uncertainty).
Showing items related by title, author, creator and subject.
Microstructural characterization of annulus fibrosus by ultrasonography: a feasibility study with an in vivo and in vitro approach Article dans une revue avec comité de lectureLANGLAIS, Tristan; DESPRAIRIES, Pierre; PIETTON, Raphaël; ROHAN, Pierre-Yves; DUBOUSSET, Jean; MEAKIN, Judith R.; WINLOVE, Peter C.; VIALLE, Raphaël; SKALLI, Wafa; VERGARI, Claudio (Springer Verlag, 2019)The main function of the intervertebral disc is biomechanical function, since it must resist repetitive high loadings, while giving the spine its flexibility and protecting the spinal cord from over-straining. It partially ...
Balance, barycentremetry and external shape analysis in idiopathic scoliosis: What can the physician expect from it? Article dans une revue avec comité de lectureLANGLAIS, Tristan; VERGARI, Claudio; ROUGEREAU, Grégoire; GAJNY, Laurent; ASSI, Ayman; GHANEM, Ismat; DUBOUSSET, Jean; VIALLE, Raphaël; PIETTON, Raphaël; SKALLI, Wafa (Elsevier BV, 2021)Objective: Our objective was to establish a corridor of normality for the external shape 3D parameters and then to assess these variables in adolescent idiopathic scoliosis (AIS). Methods: Adolescent with mild and severe ...
Estimating pulmonary function after surgery for adolescent idiopathic scoliosis using biplanar radiographs of the chest with 3D reconstruction Article dans une revue avec comité de lecturePIETTON, Raphaël; BOULOUSSA, Houssam; LANGLAIS, Tristan; TAYTARD, Jessica; BEYDON, Nicole; SKALLI, Wafa; VERGARI, Claudio; VIALLE, Raphaël (The British Editorial Society of Bone & Joint Surgery, 2022)Aims This study addressed two questions: first, does surgical correction of an idiopathic scoliosis increase the volume of the rib cage, and second, is it possible to evaluate the change in lung function after corrective ...
Biomechanical Evaluation of Intercostal Muscles in Healthy Children and Adolescent Idiopathic Scoliosis: A Preliminary Study Article dans une revue avec comité de lecturePIETTON, Raphaël; DAVID, Mercedes; HISAUND, Alisa; LANGLAIS, Tristan; SKALLI, Wafa; VIALLE, Raphaël; VERGARI, Claudio (Elsevier, 2021)Spine deformity during adolescent idiopathic scoliosis can induce a rib-cage deformity. This bone deformity can have direct consequences on the chest-wall muscles, including intercostal muscles, leading to respiratory ...
Article dans une revue avec comité de lectureVERGARI, Claudio; SKALLI, Wafa; ABELIN-GENEVOIS, Kariman; BERNARD, Jean-Claude; HU, Zongshan; CHENG, Jack Chun Yiu; CHU, Winnie Chiu Wing; ASSI, Ayman; KARAM, Mohammad; GHANEM, Ismat; BASSANI, Tito; GALBUSERA, Fabio; SCONFIENZA, Luca Maria; BRAYDA-BRUNO, Marco; COURTOIS, Isabelle; EBERMEYER, Eric; VIALLE, Raphael; LANGLAIS, Tristan; DUBOUSSET, Jean (Elsevier BV, 2022-08)Adolescent idiopathic scoliosis (AIS) is a three-dimensional deformity of the spine. Spine slenderness, which represents its potential instability to buckling under compressive loads, was shown to be higher in AIS patients ...