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学科主题: 临床医学
题名:
In situ forces and length patterns of the fibular collateral ligament under controlled loading: an in vitro biomechanical study using a robotic system
作者: Liu, Ping; Wang, Jianquan; Xu, Yan; Ao, Yingfang
关键词: Fibular collateral ligament ; In situ forces ; Length patterns ; Knee kinematics ; Biomechanical study
刊名: KNEE SURGERY SPORTS TRAUMATOLOGY ARTHROSCOPY
发表日期: 2015-04-01
DOI: 10.1007/s00167-013-2824-1
卷: 23, 期:4, 页:1018-1025
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology
类目[WOS]: Orthopedics ; Sport Sciences ; Surgery
研究领域[WOS]: Orthopedics ; Sport Sciences ; Surgery
关键词[WOS]: ANTERIOR CRUCIATE LIGAMENT ; KNEE KINEMATICS ; RECONSTRUCTION ; GRAFT ; INSTABILITY ; FLEXION ; TENDON ; SENSOR
英文摘要:

The aim of this study was to determine the in situ forces and length patterns of the fibular collateral ligament (FCL) and kinematics of the knee under various loading conditions.

Six fresh-frozen cadaveric knees were used (mean age 46 +/- A 14.4 years; range 20-58). In situ forces and length patterns of FCL and kinematics of the knee were determined under the following loading conditions using a robotic/universal force-moment sensor testing system: no rotation, varus (10 Nm), external rotation (5 Nm), and internal rotation (5 Nm) at 0A degrees, 15A degrees, 30A degrees, 60A(0), 90A degrees, and 120A degrees of flexion, respectively.

Under no rotation loading, the distances between the centres of the FCL attachments decreased as the knee flexed. Under varus loading, the force in FCL peaked at 15A degrees of flexion and decreased with further knee flexion, while distances remained nearly constant and the varus rotation increased with knee flexion. Using external rotation, the force in the FCL also peaked at 15A degrees flexion and decreased with further knee flexion, the distances decreased with flexion, and external rotation increased with knee flexion. Using internal rotation load, the force in the FCL was relatively small across all knee flexion angles, and the distances decreased with flexion; the amount of internal rotation was fairly constant.

FCL has a primary role in preventing varus and external rotation at 15A degrees of flexion. The FCL does not perform isometrically following knee flexion during neutral rotation, and tibia rotation has significant effects on the kinematics of the FCL. Varus and external rotation laxity increased following knee flexion. By providing more realistic data about the function and length patterns of the FCL and the kinematics of the intact knee, improved reconstruction and rehabilitation protocols can be developed.

语种: 英语
项目资助者: Peking University Third Hospital
WOS记录号: WOS:000351611700014
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.bjmu.edu.cn/handle/400002259/55265
Appears in Collections:北京大学第三临床医学院_运动医学研究所_期刊论文

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作者单位: Peking Univ, Inst Sports Med, Hosp 3, Beijing 100191, Peoples R China

Recommended Citation:
Liu, Ping,Wang, Jianquan,Xu, Yan,et al. In situ forces and length patterns of the fibular collateral ligament under controlled loading: an in vitro biomechanical study using a robotic system[J]. KNEE SURGERY SPORTS TRAUMATOLOGY ARTHROSCOPY,2015,23(4):1018-1025.
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