Biomechanical Study of Lumbar Spine using Unilateral Pedicle Screw with Tadpole Fixation System

• YOSHIKAWA Takamasa

  Depatment of mechanical Engineering, Mie University

• OI Suguru

  Depatment of mechanical Engineering, Mie University

• KASAI Yuichi

  Faculty of Medicine, Mie University

• ZHUO Wang

  Faculty of Medicine, Mie University

• INABA Tadashi

  Depatment of mechanical Engineering, Mie University

• UCHIDA Keisuke

  Depatment of mechanical Engineering, Mie University

• WATANABE Ryuji

  Depatment of mechanical Engineering, Mie University

• KATO Takaya

  Research center for creation, Mie University

• NAKAMATA Tkaaki

  Faculty of health science, Suzuka University of Medical Science

抄録

The purpose of this study was to investigate the biomechanical stability of unilateral pedicle screw and rod system fixation (unilateral PS fixation) using the Tadpole system fixation for an unstable lumbar spine. We used 5 lumbar spines (L3/4) of a functional spinal unit (FSU) obtained from wild boar cadaver specimens. Damage or instrumentation was sequentially administered to each specimen, and 6 models were prepared: (1) an intact model, (2) an injury model with facet joint resection, (3) a unilateral PS fixation model, (4) a bilateral PS fixation model, (5) a Tadpole system fixation model, and (6) a combination of the unilateral PS and Tadpole system fixation models. We conducted a bending test in 8 directions by using a 6-axis material tester, and the range of motion (ROM) of each model in all directions was measured. The ROM of the combined fixation model of the unilateral PS and Tadpole system was considerably decreased in all directions. These findings indicate that the combination unilateral PS and Tadpole system fixation is a minimally invasive method that has the same stability as bilateral PS fixation.

収録刊行物

• Journal of Biomechanical Science and Engineering

  Journal of Biomechanical Science and Engineering 6 (5), 391-398, 2011

  一般社団法人 日本機械学会

キーワード

• Unilateral Pedicle Screw and Rod System
• Tadpole System
• Minimally Invasive Surgery
• Spine Biomechanics
• Unstable Lumbar Spine

詳細情報

• CRID: 1390282680239214208
• NII論文ID: 130002066871
• DOI: 10.1299/jbse.6.391
• ISSN: 18809863
• Web Site: http://www.jstage.jst.go.jp/article/jbse/6/5/6_5_391/_pdf
• 本文言語コード: en
• データソース種別:
  • JaLC
  • Crossref
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可