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Tuyển tập các báo cáo nghiên cứu về hóa học được đăng trên tạp chí sinh học quốc tế đề tài : Tadpole system as new lumbar spinal instrumentation | Journal of Orthopaedic Surgery and Research BioMed Central Open Access Tadpole system as new lumbar spinal instrumentation Yuichi Kasai 1 Tadashi Inaba2 Koji Akeda1 and Atsumasa Uchida1 Address Department of Orthopaedic Surgery Mie University Graduate School of Medicine 2-174 Edobashi Tsu city Mie prefecture 514-8507 Japan and 2Department of Mechanical Engineering Mie University Tsu city Mie prefecture Japan Email Yuichi Kasai - ykasai@clin.medic.mie-u.ac.jp Tadashi Inaba - inaba@mach.mie-u.ac.jp Koji Akeda - k_akeda@ciln.medic.mie-u.ac.jp Atsumasa Uchida- atsumasa@clin.medic.mie-u.ac.jp Corresponding author Published 12 September 2008 Received 19 June 2008 Journal of Orthopaedic Surgery and Research 2008 3 41 doi l0.ll86 l749-799X-3-41 Accepted 12 September 2008 This article is available from http www.josr-online.cOm content 3 1 41 2008 Kasai et al licensee BioMed Central Ltd. This is an Open Access article distributed under the terms of the Creative Commons Attribution License http creativecommons.org licenses by 2.0 which permits unrestricted use distribution and reproduction in any medium provided the original work is properly cited. Abstract Background There have been reports of serious complications associated with pedicle screw fixation including nerve root injuries caused by accidental screw insertion. We have developed a new system of lumbar spinal instrumentation that we call Tadpole system . The purposes of this report were to show the results of a biomechanical study and the short-term outcome of a clinical study as well as to determine the usefulness of this system. Methods The Tadpole system lumbar spinal fusion is a hook-and-rod system according to which the spine is stabilized using 2 sets of 2 spinous processes each that are held in place by 4 hooks tandemly connected to a rod. The biomechanical study was done using 5 human lumbar cadaveric spines and the range of motion ROM was examined in a non-treatment model an injured model a pedicle screw .
