Pullout Strength of Pedicle Screws Following Redirection After Lateral or Medial Wall Breach

• 資料種別: 博士論文
• ISSN: 0362-2436
• タイトル: Pullout Strength of Pedicle Screws Following Redirection After Lateral or Medial Wall Breach
• 巻次・部編番号: 43 17
• 著者・編者: Maeda, Toru; Higashino, Kosaku; Manabe, Hiroaki; Yamashita, Kazuta; Hayashi, Fumio; Goda, Yuichiro; Tsuruo, Yoshihiro; Sairyo, Koichi
• 著者標目: Maeda, Toru; Higashino, Kosaku; Manabe, Hiroaki; Yamashita, Kazuta; Hayashi, Fumio; Goda, Yuichiro; Tsuruo, Yoshihiro; Sairyo, Koichi
• 出版事項: Lippincott Williams & Wilkins|Wolters Kluwer Health, Inc.
• 出版年月日等: 2018-09-01
• 出版年（W3CDTF）: 2018-09-01
• 並列タイトル等: 椎弓根スクリューの椎弓根外側、内側に誤挿入後再挿入した際の引き抜き強度; Pullout Strength of Pedicle Screws
• タイトル（掲載誌）: Spine
• 授与機関名: 徳島大学
• 授与年月日: 2020-03-23
• 授与年月日（W3CDTF）: 2020-03-23
• 報告番号: 甲第3372号
• 学位: 博士（医学）
• 博論授与番号: 甲第3372号
• 本文の言語コード: eng
• 件名標目: larger screw; malpositioned screw; pedicle screw; pullout strength; redirection; thoracolumbar spine
• 対象利用者: 一般
• 一般注記: Study Design: A cadaveric biomechanical study designed to test the pullout strength of pedicle screws.Objective: To evaluate the pullout strength of redirected pedicle screws with a larger diameter following lateral wall breach, redirected pedicle screws of the same diameter following medial wall breach, and redirected pedicle screws with a larger diameter following medial wall breach. Summary of Background Data: Screw malposition is one of the main pitfalls of inserting pedicle screws. Intraoperatively a malpositioned screw is re-directed and inserted along the correct axis.Methods: Forty-seven vertebrae (T9–L5) were harvested from 8 fresh cadaveric spines. The 18 pedicle screws that breached the lateral wall were then removed and redirected using a pedicle screw of 1 mm larger in diameter. The 16 pedicle screws that had breached the medial wall were then removed and redirected using a pedicle screw of the same diameter. The other 13 pedicle screws that had breached the medial wall were then removed and redirected using a pedicle screw of 1 mm larger in diameter. The pullout strength was measured.Results: Following lateral wall breach, mean pullout strength for the larger redirected screws was 46.9% greater than that of the correctly aligned screws. Following medial wall breach, mean pullout strength for the redirected screws of the same diameter was 20.6% less than that of the correctly aligned screws. Mean pullout strength for the larger pedicle screws following medial wall breach was 27.3% more than that of the correctly aligned screws.Conclusion: Redirected pedicle screws of larger diameter after a lateral or medial pedicle breach show recovery of pullout strength. However, the pullout strength of redirected pedicle screws of the same diameter after a medial pedicle breach is significantly less than that of correctly aligned screws.; Redirected pedicle screws of larger diameter after a lateral or medial pedicle breach show the recovery of pullout strength. However, the pullout strength of redirected pedicle screws of the same diameter after a medial pedicle breach is significantly less than that of correctly aligned screws.
• DOI: info:doi/10.1097/BRS.0000000000002611; https://doi.org/info:doi/10.1097/BRS.0000000000002611
• 国立国会図書館永続的識別子: info:ndljp/pid/11511503; https://dl.ndl.go.jp/pid/11511503
• コレクション（共通）: 障害者向け資料
• コレクション（障害者向け資料：レベル1）: テキストデータ
• コレクション（個別）: 国立国会図書館デジタルコレクション > デジタル化資料 > 博士論文; https://dl.ndl.go.jp/collections/A00014
• 収集根拠: 博士論文（自動収集）
• 受理日（W3CDTF）: 2020-07-06T20:31:19+09:00
• 記録形式（IMT）: application/pdf
• オンライン閲覧公開範囲: 国立国会図書館内限定公開
• デジタル化資料送信: 図書館・個人送信対象外
• 遠隔複写可否（NDL）: 可
• 掲載誌（URI）: http://repo.lib.tokushima-u.ac.jp/114709
• 連携機関・データベース: 国立国会図書館 : 国立国会図書館デジタルコレクション; https://dl.ndl.go.jp