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Effects of lateral‐offset sole shoes on knee adduction moment in women with medial compartment knee osteoarthritis
Author(s) -
Jang Woo Young,
Jung Hae Woon,
Choi Gi Won,
Lee Hyun Min,
Park Hae Soo,
Lee Soon Hyuck
Publication year - 2018
Publication title -
journal of orthopaedic research®
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.041
H-Index - 155
eISSN - 1554-527X
pISSN - 0736-0266
DOI - 10.1002/jor.23809
Subject(s) - barefoot , ankle , medicine , osteoarthritis , preferred walking speed , physical medicine and rehabilitation , ankle dorsiflexion , physical therapy , surgery , alternative medicine , pathology
ABSTRACT This study aimed to determine the impact of wearing a lateral‐offset sole shoe (LOSS) on knee adduction moment (KAM) in patients with medial knee osteoarthritis (OA). From December 2012 to November 2016, patients with medial knee OA were recruited. Ninety‐three knees (50 left, 43 right) of 93 female patients were analyzed. The first peak KAMs were measured with patients (i) walking barefoot; (ii) walking in conventional shoes; and (iii) walking in LOSSs. The patients had grade 1 ( n = 19), grade 2 ( n = 49), grade 3 ( n = 20), and grade 4 ( n = 5) knee OA. First peak KAMs differed significantly in all three conditions ( p = 0.031). In the post hoc analysis, first peak KAMs were significantly lower during LOSS walking than during conventional shoe walking ( p = 0.001), but there were no differences in peak KAMs between barefoot and LOSS walking ( p = 0.784). In the subgroup analysis, patients with grades 2 and 3 OA showed significantly lower first peak KAMs during LOSS walking than during conventional shoe walking ( p = 0.029 and p = 0.011, respectively). Both the peak eversion ankle angle and moment of barefoot walking showed a significant increase compared with LOSS and conventional shoe walking, while there was no significant difference between LOSS and conventional shoe walking ( p = 0.612 and p = 0.197, respectively). Our results suggest that LOSS wearing caused significant KAM reductions compared with conventional shoe wearing. Since LOSS wearing does not cause changes in the peak eversion ankle angle and moment during the load response, it may be an effective method to reduce the KAM in women with knee OA. © 2017 Orthopaedic Research Society. Published by Wiley Periodicals, Inc. J Orthop Res 36:1694–1700, 2018.