지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
초록· 키워드
오류제보하기
Interspinous spacers have been developed as an alternative surgical treatment for laminectomy or fusion with pedicle screws and rods for the treatment of lumbar spinal stenosis. However, its biomedical efficacies are well not known. In this study, we evaluated kinematic behaviors of the surgical and the adjacent levels before and after inserting interspinous spacers. Three porcine lumbar spines were prepared. On each specimen, an interspinous spacer was inserted at the L4-L5. Flexion-extension moments (0, 2.5, 5.0, 7.5, 10Nm) were applied. A stereophotogrammetric set-up with DLT algorithm was used to assess the three-dimensional motions of the specimen where three markers (≤0.8㎜) were attached to each vertebra. Results showed that extension motion decreased by 15-24% at the surgical level (L4-L5) after insertion of interspinous spacer. At the adjacent levels, the range of motion remained unchanged. In flexion, no significant changes in motion were observed regardless of levels. Therefore, our experimental results demonstrated the interspinous spacer is very effective in limiting the extension motion that may cause narrowing of the spinal canal and vertebral foramen while maintaining kinematic behaviors at the adjacent levels. Further, these results suggested that the use of interspinous spacer may be able to prevent lower back pain at the surgical level and to lower the incidence of degenerative changes at the adjacent levels.
목차
등록된 정보가 없습니다.
참고문헌 (12)
참고문헌 신청
/ 1989. / Three-Dimensional Movements of the Whole Lumbar Spine and Lumbosacral Joint 14 : 1256 ~ 1260
/ 1994. / Mechanical Behaviors of the Human Lumbar and Lumbosacral Spine as Shown by Three-Dimensional Load-Displacement Curves 76 : 413 ~ 424
/ 1996 / Effects of short anterior lumbar interbody fusion on biomechanics of neighboring unfused segments 21 : 549 ~ 555
/ 1996. / Methods for determining spinal flexion/ extension, lateral bending, and axial rotation from marker coordinate data: Analysis and Refinement 15 : 55 ~ 78
/ 2000. / A method to synchronise cameras using the direct linear transformation technique 33 : 1751 ~ 1754
/ 1994. / Mechanical Behaviors of the Human Lumbar and Lumbosacral Spine as Shown by Three-Dimensional Load-Displacement Curves 76 : 413 ~ 424
/ 1996 / Effects of short anterior lumbar interbody fusion on biomechanics of neighboring unfused segments 21 : 549 ~ 555
/ 1996. / Methods for determining spinal flexion/ extension, lateral bending, and axial rotation from marker coordinate data: Analysis and Refinement 15 : 55 ~ 78
/ 2000. / A method to synchronise cameras using the direct linear transformation technique 33 : 1751 ~ 1754
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