Pedicle Subtraction Osteotomy in Adult Spinal Deformity: Comparing Fixed Versus Flexible Sagittal Imbalance

This study compares the results of pedicle subtraction osteotomy (PSO) for fixed versus flexible sagittal imbalance in adult spinal deformity. Summary of Background Data: The result of PSO may be different according to the flexibility of the deformity. Methods: Sixty-one patients who underwent PSO were enrolled with a minimum 2-year follow-up. Twenty-one patients had fixed imbalance resulting from ankylosing spondylitis and iatrogenic flatback deformity, and 40 patients had flexible imbalance resulting from degenerative spinal deformity and posttraumatic kyphosis. Results: The mean age was 54.9±9.2 years in the fixed group and 65.9±10.5 years in the flexible group (P
Source: Journal of Spinal Disorders and Techniques - Category: Surgery Tags: Primary Research Source Type: research