ScolioSim models the spine as a chain of motion segments and shows how the unfused segments respond when you fix others, within the range each one showed on bending films.
Every motion segment from T1 to S1 gets its own range from the patient's standing and side-bending films. No population averages.
Fix any combination of segments, in situ, at the bending position or at a chosen correction, and compare the options side by side.
See where T1 ends up over the sacrum, how level it stays and how much of the spine's mobility reserve the compensation uses.
No outcome prediction and no invented data: the simulator only replays the mobility the patient's spine already showed.
Automatic Cobb angles between the most tilted vertebrae, structural curves from bending residuals and Lenke classification.
Interactive 3D vertebrae with apical rotation, updated in real time as you change the plan.
Four steps from the patient's radiographs to a fusion plan you can compare.
Standing frontal and lateral full-spine films plus right and left side-bending films. Images stay in your browser.
Place five key endplates (T1, T6, T12, L3, S1) and the whole 3D model follows; refine vertebra by vertebra if needed.
Choose the fused segments and their position, then compare scenarios: balance, Cobb angles and mobility reserve used.
Save the case or export a PDF report with measurements, segment mobility and the simulated alignment.
ScolioSim was created by Dr. Diego Ferrández Sempere, a spine surgeon with 20+ years of experience in adolescent scoliosis surgery. Born from the need to rehearse different fusion levels before entering the operating room.
ScolioSim is a browser-based 3D simulator for planning scoliosis fusion surgery. A surgeon fits a vertebral model on the patient's standing and side-bending radiographs, chooses which motion segments to fix, and sees how the remaining free segments rebalance the trunk.
No. ScolioSim does not forecast results. It only replays the mobility each segment showed on the patient's own bending films under the constraints of the chosen fusion, so different fusion levels can be compared before surgery.
A standing full-spine frontal and lateral radiograph, plus right and left side-bending films. Segments without bending data are treated as rigid: the simulator never assumes mobility that was not measured.
For every motion segment from T1 to S1, the coronal angle between the two vertebrae is read on the standing film and on each bending film. The span between those measurements is the range that segment may use in the simulation.
No. It is a planning and teaching aid for qualified spine surgeons. It does not replace clinical judgement, and radiographs stay in the user's own browser.