Numerical simulations of skeletal muscle mechanics

Authors: Eriksson, 
Document Type: Conference
Pubstate: Published
Journal: Proc. CST-2006, Gran Canaria
Year: 2006


This paper discusses the simulation of forces in a musculoskeletal system. Main focus is put on the treatment of static and dynamic equilibrium for a redundant force system, where the distribution of the needed forces for maintaining a posture or performing a movement is not unique. Reference is given to some general aspects of redundancy, from which a static optimization method is briefly discussed. This leads to a general framework for static optimization, where different performance criteria can be introduced. Also the dynamic equilibrium during movement is discussed, and a temporal finite element viewpoint is introduced for treatment of target- controlled movements. Also this leads to a rather general framework, where different criteria for optimal movements can be introduced. From both static and dynamic optimization algorithms is concluded that existing numerical descriptions for muscular behavior is missing some important aspects, primarily related to memory aspects in the functioning. Some ideas concerning needed studies on muscular force production are discussed.