Department of Mechanical Engineering, Stanford University, Clark Center, Room S-321, Mail Code 5450, 318 Campus Drive, Stanford, CA 94305-5450, USA.
Ann Biomed Eng. 2010 Feb;38(2):269-79. doi: 10.1007/s10439-009-9852-5. Epub 2009 Dec 3.
Computer models that estimate the force generation capacity of lower limb muscles have become widely used to simulate the effects of musculoskeletal surgeries and create dynamic simulations of movement. Previous lower limb models are based on severely limited data describing limb muscle architecture (i.e., muscle fiber lengths, pennation angles, and physiological cross-sectional areas). Here, we describe a new model of the lower limb based on data that quantifies the muscle architecture of 21 cadavers. The model includes geometric representations of the bones, kinematic descriptions of the joints, and Hill-type models of 44 muscle-tendon compartments. The model allows calculation of muscle-tendon lengths and moment arms over a wide range of body positions. The model also allows detailed examination of the force and moment generation capacities of muscles about the ankle, knee, and hip and is freely available at www.simtk.org .
计算机模型可以估计下肢肌肉的发力能力，目前已被广泛用于模拟肌肉骨骼手术的效果，并对运动进行动力学模拟。之前的下肢模型是基于对肢体肌肉结构（即肌纤维长度、肌纤维角度和生理横截面积）的严重限制数据。在这里，我们描述了一个新的基于 21 具尸体的下肢模型，该模型的数据量化了肌肉结构。该模型包括骨骼的几何表示、关节的运动学描述以及 44 个肌-腱室的 Hill 型模型。该模型可以计算出在大范围身体姿势下的肌-腱长度和力臂。该模型还可以详细检查踝关节、膝关节和髋关节周围肌肉的发力能力，可在 www.simtk.org 上免费获取。
