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
Identifiers and Pagination:Year: 2014
First Page: 96
Last Page: 99
Publisher Id: TORJ-8-96
Article History:Received Date: 7/7/2013
Revision 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.
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.
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.
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.
Pronated foot posture and flat foot are significantly associated with medial compartment knee osteoarthritis.