Reliability of joint kinematic calculations based on direct kinematic and inverse kinematic models in obese children

Most conventional gait models use direct kinematics (DK) to calculate joint angles and their derivatives. DK calculate joint angles as Euler angles between adjacent segment reference frames. These are defined directly from the experimental markers, which are assumed to be rigidly attached to the bones [1]. DK gait models are limited to joint kinematic and kinetic analysis. In contrast to DK models, the more sophisticated musculoskeletal (MSK) models (e.g. OpenSim [2] or AnyBody [3]) use inverse kinematics (IK), also known as global optimization, to calculate joint angles.

Source: Gait and Posture - September 1, 2018 Category: Orthopaedics Authors: B. Horsak, B. Pobatschnig, C. Schwab, A. Baca, A. Kranzl, H. Kainz Tags: Full length article Source Type: research