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このアイテムの引用には次の識別子を使用してください:
http://hdl.handle.net/10564/3925
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タイトル: | In vitro biomechanical evaluation of tri-condylar total knee arthroplasty with posterior release for restoration of full extension. |
その他のタイトル: | Tri-condylar形状人工膝関節において後方剥離手技が完全伸展獲得におよぼす影響:新鮮凍結屍体を用いた生体力学的評価 |
著者: | Noboru, Marehoshi Fujii, Tadashi Mo, Jian-Qiang Liang, Ting Luo, Zong-Ping Tanaka, Yasuhito |
キーワード: | arthroplasty extension knee posterior release tri-condylar |
発行日: | 2017年10月 |
出版者: | Elsevier |
引用: | Journal of orthopaedic translation Vol.11 p.1-6 (2017 Oct) |
抄録: | Background/objective: The continuous improvement of knee function during deep flexion remains a challenge in total knee arthroplasty. Tri-condylar total knee arthroplasty has been designed to achieve this goal. However, the introduction of a third nonanatomic spherical condyle might prevent the joint from reaching full extension due to posterior soft tissue tightening. This study aimed to address these issues related to soft tissue tightening and full extension limitation. Methods: Biomechanical tests were performed on six cadaveric specimens of the entire lower extremities. The tri-condylar design was compared with a posterior cruciate sacrificing design of the same shape without the ball structure. Knee joint kinematics was measured, including the extension and flexion angles, the extension balance, and the extension gap. The test was repeated after release of the medial and lateral posterior intercondylar soft tissues at a safe distance from the popliteal artery and nerves. Results: Both designs resulted in a knee flexion angle up to ∼130°. The tri-condylar design showed an extension angle of -11.2 ± 5.4°, which was a significantly greater limitation than that obtained with the cruciate sacrificing design (-3.8 ± 4.7°; p = 0.047). Moreover, the extension angle of the tri-condylar design was significantly improved after the release of posterior intercondylar soft tissues (-0.1 ± 6.7°; p = 0.028). Conclusion: The tri-condylar design efficiently allowed the full extension by the release of posterior intercondylar soft tissues at a safe distance from the popliteal artery and nerves. |
内容記述: | 博士(医学)・乙第1499号・令和3年3月15日 © 2017 The Authors. Published by Elsevier (Singapore) Pte Ltd on behalf of Chinese Speaking Orthopaedic Society. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/). |
URI: | http://hdl.handle.net/10564/3925 |
ISSN: | 2214031X |
DOI: | https://doi.org/10.1016/j.jot.2017.01.001 |
学位授与番号: | 24601B1499 |
学位授与年月日: | 2021-03-15 |
学位名: | 博士(医学) |
学位授与機関: | 奈良県立医科大学 |
出現コレクション: | 2020年度
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