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논문 기본 정보

자료유형
학술저널
저자정보
Daniella Marta Beniamen (Central Clinical School, Faculty of Medicine and Health, The University of Sydney, Sydney, NSW, Australia) Kirsten Ruth Murray (Central Clinical School, Faculty of Medicine and Health, The University of Sydney, Sydney, NSW, Australia) Philip Boughton (Central Clinical School, Faculty of Medicine and Health, The University of Sydney, Sydney, NSW, Australia) James Van Gelder (Central Clinical School, Faculty of Medicine and Health, The University of Sydney, Sydney, NSW, Australia)
저널정보
대한척추외과학회 대한척추외과학회지 대한척추외과학회지 제31권 제3호
발행연도
2024.9
수록면
96 - 107 (12page)

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초록· 키워드

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Study Design: Original research article. Objectives: This study compared the stiffness of established and novel fixation systems when applied to the caudal segment in Sprague-Dawley rats in an ex vivo trial. Study of Literature Review: Segmental hypermobility necessitates the application of model-specific intervertebral fixation. Materials and Methods: Six fixation systems (external k-wires, internal k-wire, titanium plate, polymer plate, polymer plate with spacer attachment [polymer T], and polymer plate with spacer attachment and ventral hook [polymer I]) were acquired or fabricated. These were compared to three control groups. Ninety-nine segments from coccygeal (Co) levels Co3 to Co8 were randomly allocated to the nine groups. Surgical implantation was timed, and segments were prepared and evaluated via micro-computed tomography imaging for inclusion. Four-point quasistatic bend testing was used to derive sample stiffness in ventral and lateral flexion. Results: In the ventral flexion position, external K-wires and polymer I fixation groups (mean ± standard deviation) displayed significantly greater bending stiffness of 9.11±7.55 N/mm2 and 9.66 ± 6.15 N/mm2 when compared to the control with no surgery (p=0.013 and 0.005), respectively. In the lateral flexion position, the polymer I group had significantly greater bending stiffness (3.32±1.57 N/mm2) than the nosurgery control (p=0.023). Conclusions: The novel polymer I fixation device showed superior segmental stiffness in ventral and lateral flexion compared to the control that did not undergo surgery, and other established external stabilisation devices. Further research should assess viability and methodology of internal fixation systems for in vivo implantation.

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