Background context Correction of adult spinal deformity (ASD) by long segment instrumented fusion is an increasingly common surgical intervention. However, it associated with high rates complications and revision surgery, especially in the elderly patient population. The construct stiffness thoracolumbar has been postulated to lead a higher incidence proximal junctional kyphosis (PJK) failure (...

BACKGROUND Short-term studies have demonstrated good surgical outcomes after pedicle subtraction osteotomy (PSO) in ankylosing spondylitis (AS) patients, but there is a paucity of literature focused on middle-term results, especially regarding patterns of loss of correction. The objective of this study is to assess the durability of surgical outcomes and the patterns of loss of correction in th...

STUDY DESIGN: A description of pedicle subtraction osteotomy for correction of kyphotic deformity of the cervical-thoracic spine and a prospective evaluation of the surgical outcomes. OBJECTIVES: To describe the surgical technique and the postoperative results of pedicle subtraction osteotomy in the upper thoracic spine and the cervical-thoracic junction. SUMMARY OF BACKGROUND DATA: Pedicle sub...

BACKGROUND To examine the survival function and prognostic factors of the adjacent segments based on a second operation after thoracolumbar spinal fusion. METHODS This retrospective study reviewed 3,188 patients (3,193 cases) who underwent a thoracolumbar spinal fusion at the author's hospital. Survival analysis was performed on the event of a second operation due to adjacent segment degenera...