Comparison of standard 2-rod constructs to multiple-rod constructs for fixation across 3-column spinal osteotomies.

摘要

Study Design. Retrospective matched-cohort comparative study. Objective. Compare radiographical outcomes after the use of a standard 2-rod construct (2-RC) versus a multiple-rod construct (multi-RC) across 3-column osteotomy sites in a matched cohort with severe kyphosis and/or scoliosis with minimum 2-year follow-up. Summary of Background Data. Three-column osteotomies are used for treating severe spinal deformities, typically with a standard 2-RC across the highly unstable osteotomy site. Methods. Between 1996 and 2010, patients undergoing a 3-column osteotomy by a single surgeon were matched for age/ diagnosis/vertebra(e) resected/levels fused and curve magnitude. Sixty-six control patients with a 2-RC were identified and appropriately matched to 66 consecutive patients with a multi-RC across the 3-column osteotomy site. Each group included 50 patients with lumbar pedicle subtraction osteotomy and 16 patients with vertebral column resection. Radiographs were measured using standard adult deformity criteria.