Article

OBJECTIVES: To examine the effectiveness of shock-absorbing insoles in the
immediate reduction of knee joint load, as well as reductions in knee joint load,
pain, and dysfunction after 1 month of wear, in individuals with knee
osteoarthritis (OA). DESIGN: Pre-post design with participants exposed to 2
conditions (normal footwear, shock-absorbing insoles) with a 1-month follow-up.
SETTING: University laboratory for testing and general community for
intervention. PARTICIPANTS: Community-dwelling individuals (N=16; 6 men, 10
women) with medial compartment knee OA. INTERVENTION: Participants were provided
with sulcus length shock-absorbing insoles to be inserted into their everyday
shoes. MAIN OUTCOME MEASURES: Primary outcome measures included the peak, early
stance peak, and late stance peak external knee adduction moment (KAM); the KAM
impulse (positive area under the KAM curve); and peak tibial vertical
acceleration. Secondary outcomes included walking pain, the Western Ontario and
McMaster Universities Osteoarthritis Index pain subscale and total score, and a
timed stair climb task. RESULTS: There was a significant reduction in the late
stance peak KAM with shock-absorbing insoles (P=.03) during follow-up compared
with the baseline test session. No other immediate or longitudinal significant
changes (P>.05) in the other KAM parameters or peak tibial acceleration after use
of a shock-absorbing insole were observed. However, significant improvements in
all measures of pain and function (P<.05) were observed. CONCLUSIONS:
Shock-absorbing insoles produced significant reductions in self-reported knee
joint pain and physical dysfunction with 1 month of wear in patients with knee OA
despite no consistent changes in knee joint load.
Further research using
randomized controlled trials, with larger sample sizes and explorations into
long-term use of shock-absorbing insoles and their effect on disease progression,
is warranted.
CI - Copyright (c) 2012 American Congress of Rehabilitation Medicine. Published by
Elsevier Inc. All rights reserved.

Langue : ANGLAIS