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Published at November 22

Differentiable Biomechanics for Markerless Motion Capture in Upper Limb Stroke Rehabilitation: A Comparison with Optical Motion Capture

cs.CV

Released Date: November 22, 2024

Authors: Tim Unger¹, Arash Sal Moslehian², J. D. Peiffer, Johann Ullrich³, Roger Gassert⁴, Olivier Lambercy⁵, R. James Cotton⁶, Chris Awai Easthope⁷

Aff.: ¹DART Lab, LLUI, Vitznau; ²Neuro-X Institute, EPFL; ³DART Lab, LLUI, Vitznau; RELab, ETH, Zurich, Switzerland; ⁴Rehabilitation Engineering Laboratory (RELab), ETH, Zurich, Switzerland; ⁵RELab, ETH, Zurich, Switzerland; ⁶Shirley Ryan AbilityLab, Dept of PM&R, Northwestern University, Chicago, IL; ⁷Data Analytics & Rehabilitation Technology (DART Lab), Lake Lucerne Institute (LLUI), Vitznau, Switzerland

Arxiv: http://arxiv.org/abs/2411.14992v1

Kinematic	bias	Unaffected arm	Affected arm
End-Effector Velocity	$\overline{IQR}$ (m/s)	0.01	0.01
Elbow Angular Velocity	$\overline{IQR}$ (°/s)	1.83	1.57
Elbow Extension	$\overline{IQR}$ (°)	3.69	3.88
Shoulder Flexion	$\overline{IQR}$ (°)	1.34	1.14
Shoulder Abduction	$\overline{IQR}$ (°)	1.20	0.91
Trunk Displacement	$\overline{IQR}$ (mm)	2.86	3.10