Journal article
Factors Influencing Accuracy of Screw Displacement Axis Detection With a D.C.-Based Electromagnetic Tracking System
Journal of biomechanical engineering, Vol.120(3), pp.431-435
06/01/1998
DOI: 10.1115/1.2798011
PMID: 10412412
Abstract
Recent technical improvements and cost reductions in electromagnetic motion tracking systems invite their application to motion axis determination in the surgical setting. After evaluation of the accuracy of a state-of-the-art D. C. electromagnetic tracking system, which generates complete three-dimensional kinematic outputs from just a single receiver, we calculated screw displacement axes (SDA’s) from its source data. The accuracy of SDA determination from such source data was evaluated for various rotational increment sizes around a revolute joint. A novel smoothing procedure, customized for this type of source data, was developed, enabling SDA detection from incremental rotations of less than 1 deg, at an accuracy appropriate for intra-operative measurement of human joint motion. Examples of SDA determination are given for motion tracking of a ball joint and of the elbow articulation.
Details
- Title: Subtitle
- Factors Influencing Accuracy of Screw Displacement Axis Detection With a D.C.-Based Electromagnetic Tracking System
- Creators
- M Bottlang - Department of Biomedical Engineering, The University of Iowa, Iowa City, IA 52240J. L Marsh - Department of Orthopaedic Surgery, The University of Iowa, Iowa City, IA 52240T. D Brown - Department of Biomedical Engineering and Department of Orthopaedic Surgery, The University of Iowa, Iowa City, IA 52240
- Resource Type
- Journal article
- Publication Details
- Journal of biomechanical engineering, Vol.120(3), pp.431-435
- Publisher
- ASME
- DOI
- 10.1115/1.2798011
- PMID
- 10412412
- ISSN
- 0148-0731
- eISSN
- 1528-8951
- Language
- English
- Date published
- 06/01/1998
- Academic Unit
- Orthopedics and Rehabilitation
- Record Identifier
- 9984040533702771
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