Journal of pediatric orthopedics. Part B
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The objective of this retrospective study was to explore, which radiographic parameters, immediately after posterior spinal fusion with pedicle screw fixation for adolescent idiopathic scoliosis (AIS), best correlate with subjacent disc wedging at a minimum of 2-year follow-up. Sixty-four consecutive AIS patients who underwent posterior pedicle screw-only instrumentation were studied. Preoperative and postoperative radiographs were obtained to measure various parameters regarding global coronal, shoulder, sagittal, and regional balance. ⋯ Two-year postoperative disc wedging, LIV tilt, and LIV translation occurred most often when disc wedging and LIV deviation or obliquity existed immediately postoperatively. This study identified a potential indicator for AIS repair. Preoperative surgical planning and intraoperative correction are important for avoiding subjacent regional imbalance after scoliosis fusion.