퇴행성 요추 질환으로 단분절 척추 유합술 및 척추경 나사못 고정술을 시행한 환자에서 나사못 기기의 금속 실패 단축과 다축 나사못 비교 = Metal Failure in patients with Short-segmental Pedicle Screw Fixation and Fusion for Degenerative Lumbar Disease Comparison Monoaxial with Polyaxial Screw

다국어 초록 (Multilingual Abstract)

Study Design: Retrospective study
Objective: To evaluate the factors affecting metal failure and screw loosening of short-segmental (1- or 2-segmental) monoaxial
or polyaxial screw fixation for degenerative lumbar disease.
Summary of Literature Review: There was a report on metal failure and screw loosening in short-segmental monoaxial and
polyaxial screw fixation in degenerative lumbar disease.
Materials and Methods: This study examined 227 cases who underwent short-segmental transpedicular screw fixation and
vertebral fusion for a degenerative lumbar.
Results: Metal failure of transpedicular screws was detected in 6 cases, 3 each in groups A and B. Screw loosening occurred in
16 and 43 cases in group A and B, respectively. Both groups had a similar incidence of spinal stenosis with instability and
spondylolisthesis. The failure rate and screw loosening according to the fusion level was also similar. The failure and screw
loosening rates was higher in the cases who did not undergo PLIF than in the cases who underwent PLIF but the difference
was not statistically significant.
Conclusion: The metal failure and screw loosening rates after transpedicular screw fixation and spinal fusion procedures for
degenerative lumbar diseases using monoaxial screws and polyaxial screws were similar.

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