Wirth, Michael AlexanderFischer, GabriellaVerdú, JorgeReissner, LisaBalocco, SimoneCalcagni, Maurizio2021-04-092021-04-092019-12-011424-8220https://hdl.handle.net/2445/176148This study aims to compare a new inertial measurement unit based system with the highly accurate but complex laboratory gold standard, an optoelectronic motion capture system. Inertial measurement units are sensors based on accelerometers, gyroscopes, and/or magnetometers. Ten healthy subjects were recorded while performing flexion-extension and radial-ulnar deviation movements of their right wrist using inertial sensors and skin markers. Maximum range of motion during these trials and mean absolute difference between the systems were calculated. A difference of 10° ± 5° for flexion-extension and 2° ± 1° for radial-ulnar deviation was found between the two systems with absolute range of motion values of 126° and 50° in the respective axes. A Wilcoxon rank sum test resulted in a no statistical differences between the systems with p-values of 0.24 and 0.62. The observed results are even more precise than reports from previous studies, where differences between 14° and 27° for flexion-extension and differences between 6° and 17° for radial-ulnar deviation were found. Effortless and fast applicability, good precision, and low inter-observer variability make inertial measurement unit based systems applicable to clinical settings.16 p.application/pdfengcc-by (c) Wirth, Michael Alexander et al., 2019http://creativecommons.org/licenses/by/3.0/esCinemàticaOptoelectrònicaKinematicsOptoelectronicsinfo:eu-repo/semantics/article6952902021-04-09info:eu-repo/semantics/openAccess31805699