Highlights
- •Subjects pre- and post-total hip arthroplasty moved with interlimb asymmetry.
- •We examined the acute effect of weight bearing visual feedback on movement symmetry.
- •Interlimb movement symmetry improved with feedback during the sit-to-stand task.
- •Structured feedback programs may be an effective clinical tool to improve symmetry.
Abstract
Background
Weight-bearing asymmetry is common in individuals with hip osteoarthritis and after
total hip arthroplasty. Including symmetry training to the rehabilitation programs
may normalize movement strategies during dynamic tasks. The purpose of this study
was to evaluate the immediate influences of real-time visual feedback of weight distribution
on the interlimb movement symmetry during the sit-to-stand task, before and after
total hip arthroplasty, and to determine whether physical impairments affect the response
to visual feedback.
Methods
Subjects before and after total hip arthroplasty participated in three- dimensional
motion analysis. Subjects completed 3 trials of sit-to-stand task in two conditions;
“without visual feedback” and “with visual feedback”. Outcome measures were the interlimb
symmetry of vertical ground reaction force, and joint kinematics and kinetics. Pain
and strength of lower limbs were assessed.
Findings
Compared to “without visual feedback” condition, subjects moved with greater symmetry
of vertical ground reaction force and joint kinetics when visual feedback was received.
However, subjects continued to demonstrate interlimb difference for joint kinetics
and vertical ground reaction force in the visual feedback condition. The increase
in symmetry was not strongly influenced by physical impairments and subjects before
and after total hip arthroplasty responded similarly to the feedback.
Interpretations
We concluded that in a single session, the visual feedback of weight bearing distribution
had a positive immediate effect on movement symmetry during the sit-to-stand task.
Future studies that assess long-term retention and functional benefits are warranted
before visual feedback is incorporated in rehabilitation for this patient population.
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Article info
Publication history
Published online: June 08, 2017
Accepted:
June 7,
2017
Received:
June 25,
2016
Identification
Copyright
© 2017 Elsevier Ltd. All rights reserved.
