Faculty Collaboration Database

A multisegmental foot model with bone-based referencing: sensitivity to radiographic input parameters. Annu Int Conf IEEE Eng Med Biol Soc 2008;2008:879-82

Date

01/24/2009

Pubmed ID

19162797

DOI

10.1109/IEMBS.2008.4649294

Scopus ID

2-s2.0-61849109722 (requires institutional sign-in at Scopus site)   11 Citations

Abstract

We present a new kinematic model measuring the three-dimensional orientation of multiple segments of the foot and ankle. The model defines neutral alignments based on the alignments of the underlying bony segments, and indexes the orientation of skin-mounted markers to the bony anatomy using measures from weightbearing x-rays. The sensitivity of the model to these radiographic input parameters was analyzed using data from walking trials. Kinematic output in each plane was found to be most sensitive to perturbations of radiographic measurements in that same plane; however, perturbations in the coronal and transverse planes demonstrated significant carry-over into other planes. The analysis highlights the importance of accurately accounting for the underlying anatomy in measuring intersegmental kinematics.

Author List

Long JT, Wang M, Winters JM, Harris GF

Authors

Gerald Harris PhD Director in the Orthopaedic Research Engineering Center (OREC) department at Marquette University
Mei Wang PhD Associate Professor in the Orthopaedic Surgery department at Medical College of Wisconsin

MESH terms used to index this publication - Major topics in bold

Algorithms
Ankle Joint
Computer Simulation
Foot
Humans
Models, Biological
Radiographic Image Enhancement
Radiographic Image Interpretation, Computer-Assisted
Reference Values
Reproducibility of Results
Sensitivity and Specificity
Subtraction Technique