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  1. 0 資料タイプ別
  2. 03 紀要論文
  1. 250 大学院医歯学総合研究科(医)
  2. 20 紀要
  3. 01 Acta medica et biologica
  4. Vol.54 No.1

Lumbar Segmental Motion Properties In vivo Determined by a New Intraoperative Measurement System

http://hdl.handle.net/10191/5228
http://hdl.handle.net/10191/5228
68f20098-5f51-43cd-a791-5ecb0729b57f
名前 / ファイル ライセンス アクション
17_0001.pdf 17_0001.pdf (1.6 MB)
Item type 紀要論文 / Departmental Bulletin Paper(1)
公開日 2008-04-08
タイトル
タイトル Lumbar Segmental Motion Properties In vivo Determined by a New Intraoperative Measurement System
タイトル
言語 en
タイトル Lumbar Segmental Motion Properties In vivo Determined by a New Intraoperative Measurement System
言語
言語 eng
キーワード
主題Scheme Other
主題 intraoperative measurement
キーワード
主題Scheme Other
主題 segmental instability
キーワード
主題Scheme Other
主題 lumbar spine
キーワード
主題Scheme Other
主題 stiffness
キーワード
主題Scheme Other
主題 neutral zone
キーワード
主題Scheme Other
主題 absorption energy
資源タイプ
資源 http://purl.org/coar/resource_type/c_6501
タイプ departmental bulletin paper
著者 Takano, Ko

× Takano, Ko

WEKO 51728

Takano, Ko

Search repository
Hasegawa, Kazuhiro

× Hasegawa, Kazuhiro

WEKO 51729

Hasegawa, Kazuhiro

Search repository
Kitahara, Ko

× Kitahara, Ko

WEKO 51730

Kitahara, Ko

Search repository
Hara, Toshiaki

× Hara, Toshiaki

WEKO 51731

Hara, Toshiaki

Search repository
Sato, Sakae

× Sato, Sakae

WEKO 51732

Sato, Sakae

Search repository
Endo, Naoto

× Endo, Naoto

WEKO 51733

Endo, Naoto

Search repository
抄録
内容記述タイプ Abstract
内容記述 In vivo quantitative evaluation of lumbar segmental stability has not been established yet. We developed a new measurement system to determine intraoperative lumbar stability. The purposes of this study were to measure in vivo segmental stability and to clarify the relationships between the preoperative radiographic findings and intraoperative measurement parameters. The system consisted of spinous process holders, a motion generator, load cell, optical displacement transducer, and computer. A cyclic displacement (2.0mm/s, 15mm max displacement) of the holders produced flexion-extension with all ligamentous structures intact. Intraoperative measurement parameters, including stiffness, neutral zone (NZ), and absorption energy (AE), were determined via load-deformation data. Twenty lumbar segments in 19 patients (M/F=10/9, mean age 59.3 years, range 21-83 years) with degenerative lumbar disease were studied. Range of motion (ROM) and horizontal displacement (HD) were determined from lateral functional X-ray using the method by Dupuis et al. Magnetic resonance images of all discs were categorized into Thompson's five grades and further into three groups: None (grades 1 and 2, n=6), Mild (grade 3, n=10), and Severe (grades 4 and 5, n=4) degeneration. Relationships between the radiographic findings and the intraoperative measurement parameters were analyzed. In all cases, intraoperative measurement was completed within 10min without complications. There was no significant relationship between the radiographic findings and intraoperative measurement parameters. Stiffness in the Mild group was significantly lower than that in the other groups (None vs Mild p<0.01, Mild vs Severe p<0.05). The NZ of the Mild group was higher than that in the other groups. AE tended to be lower in the Mild group. Our measurement system established a method to determine stiffness, NZ, and AE by obtaining continuous data in vivo. There were no significant relationships between the functional radiographic results and biomechanical data, suggesting that conventional X-ray examinations cannot be used to determine segmental instability. The Mild group had less stiffness and a higher NZ than the other groups, possibly indicating "instability" in patients with mild disc degeneration.
書誌情報 Acta medica et biologica
en : Acta medica et biologica

巻 54, 号 1, p. 1-8, 発行日 2006-03
出版者
出版者 Niigata University School of Medicine
ISSN
収録物識別子タイプ ISSN
収録物識別子 05677734
書誌レコードID
収録物識別子タイプ NCID
収録物識別子 AA00508361
著者版フラグ
値 publisher
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