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- Title
Reference in-vitro dataset for inertial-sensor-to-bone alignment applied to the tibiofemoral joint.
- Authors
Weygers, Ive; Kok, Manon; Seel, Thomas; Shah, Darshan; Taylan, Orçun; Scheys, Lennart; Hallez, Hans; Claeys, Kurt
- Abstract
Skin-attached inertial sensors are increasingly used for kinematic analysis. However, their ability to measure outside-lab can only be exploited after correctly aligning the sensor axes with the underlying anatomical axes. Emerging model-based inertial-sensor-to-bone alignment methods relate inertial measurements with a model of the joint to overcome calibration movements and sensor placement assumptions. It is unclear how good such alignment methods can identify the anatomical axes. Any misalignment results in kinematic cross-talk errors, which makes model validation and the interpretation of the resulting kinematics measurements challenging. This study provides an anatomically correct ground-truth reference dataset from dynamic motions on a cadaver. In contrast with existing references, this enables a true model evaluation that overcomes influences from soft-tissue artifacts, orientation and manual palpation errors. This dataset comprises extensive dynamic movements that are recorded with multimodal measurements including trajectories of optical and virtual (via computed tomography) anatomical markers, reference kinematics, inertial measurements, transformation matrices and visualization tools. The dataset can be used either as a ground-truth reference or to advance research in inertial-sensor-to-bone-alignment. Measurement(s) marker trajectory • anatomical landmark • Inertia Technology Type(s) optical motion capture system • computed tomography • inertial measurement device Factor Type(s) movement plane • movement duration • movement excitation • tibiofemoral flexion range of motion Sample Characteristic - Organism Homo sapiens Sample Characteristic - Environment cadaver Machine-accessible metadata file describing the reported data: https://doi.org/10.6084/m9.figshare.14987013
- Subjects
KINEMATICS; COMPUTED tomography; CALIBRATION; VISUALIZATION; SOFT tissue infections
- Publication
Scientific Data, 2021, Vol 8, Issue 1, p1
- ISSN
2052-4463
- Publication type
Article
- DOI
10.1038/s41597-021-00995-8