Abstract: Matrix methods for kinematic analysis of spatial linkages were extended to provide jerk of joint pair variables, individual points, and individual links. Simple expressions for axode geometry ...

Abstract: Least squares methods were developed to determine instant screw axis (ISA) and angular acceleration axis (AAA) parameters in experimental and analytical studies. The algorithms provide linear ...

Abstract: This paper describes a general technique for fitting a spatial kinematic model to an in-vivo anatomical joint under typical physiological loading conditions. The method employs a nonlinear least ...

Abstract: The locations of the joint axes of the ankle complex vary considerably between subjects, yet no noninvasive method with demonstrated accuracy exists for locating these axes. The moments of ...