Experimental and computational modeling of joint and ligament mechanics

被引:5
作者
Debski, RE [1 ]
Darcy, SP [1 ]
Woo, SLY [1 ]
机构
[1] Univ Pittsburgh, Musculoskeletal Res Ctr, Dept Bioengn, Ctr Bioengn 405, Pittsburgh, PA 15219 USA
关键词
kinematics; forces; robotics; mathematical model;
D O I
10.1123/jab.20.4.450
中图分类号
R318 [生物医学工程];
学科分类号
0831 [生物医学工程];
摘要
Quantitative data on the mechanics of diarthrodial joints and the function of ligaments are needed to better understand injury mechanisms, improve surgical procedures, and develop improved rehabilitation protocols. Therefore, experimental and computational approaches have been developed to determine joint kinematics and the in-situ forces in ligaments and their replacement grafts using human cadaveric knee and shoulder joints. A robotic/universal force-moment sensor testing system is used in our research center for the evaluation of a wide variety of external loading conditions to study the function of ligaments and their replacements; it has the potential to reproduce in-vivo joint motions in a cadaver knee. Two types of computational models have also been developed: a rigid body spring model and a displacement controlled spring model. These computational models are designed to complement and enhance experimental studies so that more complex loading conditions can be examined and the stresses and strains in the soft tissues can be calculated. In the future, this combined approach will improve our understanding of these joints and soft tissues during in-vivo activities and serve as a tool to aid surgical planning and development of rehabilitation protocols.
引用
收藏
页码:450 / 474
页数:25
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