Ghaneei M, et al. - The 3-dimensional (3D) markerless asymmetry analysis, created to evaluate and monitor the scoliotic curve, requires an expert to monitor the procedure to avert misclassification for some patients, so researchers sought to improve the user-independence level of the previously developed 3D markerless asymmetry analysis implementing a new asymmetry threshold without compromising its accuracy management of adolescent idiopathic progressive scoliosis. A more conservative approach in monitoring scoliotic curves in clinical applications was suggested in this study. Nonetheless, the risk of having non-measured curves with progression would be decreased, a smaller number of radiographs would be saved.