RESEARCH ARTICLE
A Positive Association Between Foot Posture Index and Medial Compartment Knee Osteoarthritis in Moroccan People
Abourazzak F.E*, 1, Kadi N1, Azzouzi H1, Lazrak F1, Najdi A2, Nejjari C2, Harzy T1
Article Information
Identifiers and Pagination:
Year: 2014Volume: 8
First Page: 96
Last Page: 99
Publisher ID: TORJ-8-96
DOI: 10.2174/1874312901408010096
Article History:
Received Date: 7/7/2013Revision Received Date: 14/10/2014
Acceptance Date: 30/10/2014
Electronic publication date: 11 /12/2014
Collection year: 2014

open-access license: This is an open access article licensed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0/) which permits unrestricted, non-commercial use, distribution and reproduction in any medium, provided the work is properly cited.
Abstract
Objectives :
To compare foot posture in people with and without medial compartment knee osteoarthritis (OA), and to assess association between its abnormalities and medial compartment knee OA.
Methods :
We compared the foot posture of patients with clinically and radiographically-confirmed medial compartment knee OA and asymptomatic healthy controls using the foot posture index (FPI), navicular height, and the medial arch.
Results :
We included 100 patients and 80 asymptomatic controls. The mean age of patients was 59 ± 7 (44-76) years and 48 ± 9 (28-60) years in the control (p=0.06). Patients group have more pronated foot for FPI (1.50 ± 2.68 vs 0.72 ± 2.63; p=0.05), more flat foot (42% vs 22%; p=0.03), and less pes cavus than the control group (58% vs 77%; p=0.004). However, there was no significant difference between the groups in the navicular height (3.90 ± 0.85 cm vs 4.00 ± 0.76 cm; p=0.41).
In multivariate statistical analysis, after adjusting for age and body mass index, pronated foot in FPI (OR=1.22, 95%IC= [1.06-1.40], p=0.005), and pes cavus (OR=0.32, 95%IC= [0.11-0.93], p=0.03) had a significant correlation with the knee osteoarthritis.
Conclusion :
Pronated foot posture and flat foot are significantly associated with medial compartment knee osteoarthritis.