Faculty Collaboration Database

Repeatability and sources of variability in multi-center assessment of segmental foot kinematics in normal adults. Gait Posture 2010 Jan;31(1):32-6

Date

09/25/2009

Pubmed ID

19775894

DOI

10.1016/j.gaitpost.2009.08.240

Scopus ID

2-s2.0-73149124506 (requires institutional sign-in at Scopus site)   30 Citations

Abstract

Multi-site application of biomechanical models can be a powerful tool as quantitative methods are employed to improve clinical care and to assess larger populations for research purposes. However, the use of such models depends on adequate validation to assure reliability in inter-site measures. We assessed repeatability and sources of variability associated with the assessment of segmental foot kinematics using the Milwaukee Foot Model during multiple testing sessions at two sites. Six healthy ambulators were instrumented and tested during comfortable ambulation; data were analyzed with variance components analysis using a mixed effects linear model. Results indicated that the largest source of variability was inter-subject; measurement error associated with Site and Session fell below 3.5 degrees in over 80% of position measurements and below 2.5 degrees in over 80% of ROM measurements. These findings support the continued use of the segmental foot model at multiple sites for clinical and research purposes.

Author List

Long JT, Eastwood DC, Graf AR, Smith PA, Harris GF

Authors

Gerald Harris PhD Director in the Orthopaedic Research Engineering Center (OREC) department at Marquette University
Gerald F. Harris Emeritus Professor in the Orthopaedic Surgery department at Medical College of Wisconsin

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

Biomechanical Phenomena
Chi-Square Distribution
Female
Foot
Gait
Humans
Imaging, Three-Dimensional
Linear Models
Male
Range of Motion, Articular
Reference Values
Reproducibility of Results
Young Adult