Article

Confidence in 3D multi-segment foot models has been limited by a lack of
repeatability data, particularly in older populations that may display unique
functional foot characteristics. This study aimed to determine the intra and
inter-observer repeatability of stance phase kinematic data from a multi-segment
foot model described by Leardini et al. [2] in people aged 50 years or older. Twenty healthy adults participated (mean age 65.4 years SD 8.4). A repeated
measures study design was used with data collected from four testing sessions on
two days from two observers. Intra (within-day and between-day) and
inter-observer coefficient of multiple correlations revealed moderate to
excellent similarity of stance phase joint range of motion (0.621-0.975).
Relative to the joint range of motion (ROM), mean differences (MD) between
sessions were highest for the within-day comparison for all planar ROM at the
metatarsus-midfoot articulation (sagittal plane ROM 5.2 degrees vs. 3.9 degrees ,
MD 3.1 degrees ; coronal plane ROM 3.9 vs. 3.1 degrees , MD 2.3 degrees ;
transverse plane ROM 6.8 degrees vs. 5.16 degrees ,
MD 3.5 degrees ).
Consequently, data from the metatarsus-midfoot articulation in the Istituto
Ortopedico Rizzoli (IOR) foot model in adults aged over 50 years needs to be
considered with respect to the findings of this study.
CI - Crown Copyright (c) 2012. Published by Elsevier B.V. All rights reserved.

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