AN INTERACTIVE GRAPHICS-BASED MODEL OF THE LOWER-EXTREMITY TO STUDY ORTHOPEDIC SURGICAL-PROCEDURES
AN INTERACTIVE GRAPHICS-BASED MODEL OF THE LOWER-EXTREMITY TO STUDY ORTHOPEDIC SURGICAL-PROCEDURES
复制标题
DOI：
10.1109/10.102791
复制
发表时间：
1990-08-01
影响因子：
4.6
通讯作者：
ROSEN, JM
中科院分区：
文献类型：
--
作者：
DELP, SL;LOAN, JP;ROSEN, JM
为了研究肌肉骨骼几何形状和肌腱参数的变化如何影响肌力及其在关节上的力矩，建立了一个人体下肢模型。43个肌腱致动器的作用路线是基于它们与三维骨表面表示的解剖关系而定义的。建立了每个执行器的模型，计算了各执行器的等距作用力-长度关系。通过对髋关节、膝关节、踝关节、距下关节和跖趾关节进行建模，定义了腿部的运动学。因此，每个肌腱致动器产生的力和关节力矩可以针对任何身体位置进行计算。用该模型计算的节点弯矩与实验测得的等距节点弯矩吻合较好。还开发了该模型的图形界面。它允许用户可视化肌肉骨骼的几何形状，并操纵模型参数来研究矫形外科手术的生物力学后果。例如，可以根据不同的手术技术，通过调整模型参数来模拟肌腱转移和延长过程。模拟手术的结果可以根据术后肌力和其他生物力学变量快速分析。
A model is developed of the human lower extremity to study how changes in musculoskeletal geometry and musculotendon parameters affect muscle force and its moment about the joints. The lines of action of 43 musculotendon actuators were defined based on their anatomical relationships to three-dimensional bone surface representations. A model for each actuator was formulated to compute its isometric force-length relation. The kinematics of the lower extremity were defined by modeling the hip, knee, ankle, subtalar, and metatarsophalangeal joints. Thus, the force and joint moment that each musculotendon actuator develops can be computed for any body position. The joint moments calculated with the model compare well with experimentally measured isometric joint moments. A graphical interface to the model has also been developed. It allows the user to visualize the musculoskeletal geometry and to manipulate the model parameters to study the biomechanical consequences of orthopaedic surgical procedures. For example, tendon transfer and lengthening procedures can be simulated by adjusting the model parameters according to various surgical techniques. Results of the simulated surgeries can be analyzed quickly in terms of postsurgery muscle forces and other biomechanical variables.<>