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. 2016 Jul 16;13:64. doi: 10.1186/s12984-016-0170-5

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© The Author(s). 2016

Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.

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Fig. 1 — Measurement and model set-up. a Measurement set-up showing (1) inertial sensors, (2) EMG electrodes and (3) hand-held 6 - DOF force transducer; b OpenSim model used with 5 lumped muscles around the knee, and the applied force as measured experimentally