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.
논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2018.1
- 수록면
- 601 - 610 (10page)
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초록· 키워드
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Study Design: In vitro cadaveric study. Purpose: To compare biomechanical performance, trial and implant insertion, and disc distraction during implant placement, when two interbody devices, an in situ continuously expandable spacer (CES) and a traditional static spacer (SS), were used for transforaminal lumbar interbody fusion. Overview of Literature: Severe degenerative disc diseases necessitate surgical management via large spacers to increase the disc space for implants. Next-generation interbody devices that expand in situ minimize insertion forces, optimize fit between vertebral endplates, and limit nerve root retraction. However, the literature lacks characterization of insertion forces as well as details on other parameters of expandable and static spacers. Methods: Ten cadaveric segments (L5–S1) were divided into two groups (n=5) and implanted with either CES or SS. Each specimen experienced unconstrained pure moment of ±6 Nm in flexion–extension, lateral bending, and axial rotation to assess the contribution of CES and SS implants in biomechanical performance. Radiographic analysis was performed during trial and implant insertion to measure distraction during spacer insertion at the posterior, central, and anterior disc regions. Pressure sensors measured the force of trial and implant insertion. Results: Biomechanical analysis showed no significant differences between CES and SS in all planes of motion. A total 2.6±0.9 strikes were required for expandable spacer trials insertion and 2.6±0.5 strikes for CES insertion. A total of 8.4±3.8 strikes were required to insert SS trials and 4.2±1.6 strikes for SS insertion. The total force per surgery was 330 N for CES and 635 N for SS. Fluoroscopic analysis revealed a significant reduction in distraction during implant insertion at the posterior and anterior disc regions (CES, 0.58 and 0.14 mm; SS, 1.04 and 0.78 mm, respectively). Conclusions: Results from the three study arms reveal the potential use of expandable spacers. During implant insertion, CESs provided similar stability, required less insertion force, and significantly reduced over-distraction of the annulus compared with SS.
목차
등록된 정보가 없습니다.
참고문헌 (28)
참고문헌 신청
Folman Y / 2006 / B-twin expandable spinal spacer for posterior lumbar interbody stabilization: mechanical testing / J Surg Orthop Adv 15:203~208
Briggs H / 1947 / Laminectomy and foraminotomy with chip fusion; operative treatment for the relief of low-back pain and sciatic pain associated with spondylolisthesis / J Bone Joint Surg Am 29:328~334
Cloward RB / 1953 / The treatment of ruptured lumbar intervertebral discs by vertebral body fusion: I. indications, operative technique, after care / J Neurosurg 10:154~168
Lin PM / 1985 / Posterior lumbar interbody fusion technique: complications and pitfalls / Clin Orthop Relat Res (193):90~102
Bagby GW / 1988 / Arthrodesis by the distraction-compression method using a stainless steel implant / Orthopedics 11:931~934
Briggs H / 1947 / Laminectomy and foraminotomy with chip fusion; operative treatment for the relief of low-back pain and sciatic pain associated with spondylolisthesis / J Bone Joint Surg Am 29:328~334
Cloward RB / 1953 / The treatment of ruptured lumbar intervertebral discs by vertebral body fusion: I. indications, operative technique, after care / J Neurosurg 10:154~168
Lin PM / 1985 / Posterior lumbar interbody fusion technique: complications and pitfalls / Clin Orthop Relat Res (193):90~102
Bagby GW / 1988 / Arthrodesis by the distraction-compression method using a stainless steel implant / Orthopedics 11:931~934
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