脊椎Ｉｎｓｔｒｕｍｅｎｔａｔｉｏｎ手術後に生じた固定隣接椎体骨折症例の経験

Abstract

Seven cases of vertebral body fractures adjacent to the instrumented vertebral were observed after posterior spinal instrumentation surgery. All patients were females and their ages ranged from 51 to 68 years (mean, 69 years). The interval between surgery and fracture recognized radiographically ranged from two months (mean, 3.5 years). This case report presents the possibility of biomechanical stress on the porotic spine adjacent to the instrumented rigid spinal segments.