Article

OBJECTIVE: To investigate the immediate efficacy of laterally wedged insoles with
arch support (LWAS) on gait in persons with bilateral medial knee osteoarthritis
(OA). DESIGN: A prospective case-control intervention study.
SETTING: A gait
laboratory with a 6-camera motion analysis system and 2 forceplates.
PARTICIPANTS: Fifteen women with bilateral medial knee OA and 15 healthy control
subjects (N=30). INTERVENTIONS: LWAS. MAIN OUTCOME MEASURES: Subjective knee pain
and objective biomechanical indices, namely, joint angles and moments in the
frontal plane, frontal plane ground reaction force and lever arm, as well as
medial/lateral center of mass and center of pressure during gait. RESULTS: When
wearing the LWAS, knee pain during gait in persons with medial knee OA decreased
(P=.01). Peak internal knee abductor moments were also reduced (P<.001) with
increasing foot progression angles, laterally shifted center of pressure, and a
shortened frontal plane lever arm (all P<.05). However, ankle invertor moments
were increased (P<.05) when wearing the LWAS. CONCLUSIONS: Although peak internal
knee abductor moment and knee pain were immediately reduced during gait when
wearing the LWAS, increased ankle invertor moments were found, suggesting that
the LWAS should be used with caution. Strengthening and monitoring the condition
of the ankle invertor muscles may be necessary if the LWAS is used as an
intervention for persons with bilateral medial knee OA.
CI - Copyright (c) 2014 American Congress of Rehabilitation Medicine. Published by
Elsevier Inc. All rights reserved.

Langue : ANGLAIS