Proper detailed parameters for S1 sacral alar iliac screw placement in the Chinese population a 3D imaging study

摘要

BackgroundS1-AI technique may be used as a salvage technique in pelvic fixation of complex spinal deformity surgery. However, the proper detailed parameters in the Chinese population has not been analyzed before to instruct S1-AI screws placement and to ensure the safety of clinical application while the trajectory in pelvic changes significantly at each angle.