Highlights
- •Hydrocephalus has high forward and lateral dynamic gait stability regardless of their fall-risk.
- •High fall-risk patients may consciously maintain lateral dynamic stability to a greater extent.
- •These findings highlight a conscious motor control component in the pathological gait.
Abstract
Background
This study aimed to investigate whether dynamic gait stability differs between idiopathic
normal-pressure hydrocephalus with high- and low-fall-risk.
Methods
Participants comprised 40 idiopathic normal-pressure hydrocephalus patients and 23
healthy-controls. Idiopathic normal-pressure hydrocephalus patients were divided into
those with high-fall-risk (n = 20) and low-fall-risk (n = 20) groups using the cut-off score of ≤14/30 for fall-risk
on the Functional Gait Assessment. Dynamic stability during gait was assessed by three-dimensional
motion analysis. Dynamic stability was defined as the ability to maintain an extrapolated
center of mass within the base of support at heel contact, with the distance between
the two defined as the margin of stability. Conscious motor control was assessed by
the Movement-Specific Reinvestment Scale.
Findings
Anteroposterior and mediolateral margin of stabilities were significantly larger in
both idiopathic normal-pressure hydrocephalus groups than in healthy-controls. The
mediolateral margin of stability was significantly higher in the high-fall-risk group
than in the low-fall-risk group; whereas, the anteroposterior margin of stability
did not differ between idiopathic normal-pressure hydrocephalus groups. The Movement-Specific
Reinvestment Scale was significantly higher in the high-fall-risk group than in the
low-fall-risk group.
Interpretation
Idiopathic normal-pressure hydrocephalus patients with have high forward and lateral
dynamic stability during gait regardless of their fall-risk. In particular, idiopathic
normal-pressure hydrocephalus patients with high-fall-risk may consciously maintain
lateral dynamic stability to a greater extent than those with low-fall-risk. These
findings highlight a conscious motor control component in the pathological gait of
idiopathic normal-pressure hydrocephalus, and provide clues for rehabilitation and
fall prevention strategies in idiopathic normal-pressure hydrocephalus patients.
Keywords
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Article info
Publication history
Published online: September 02, 2022
Accepted:
August 30,
2022
Received:
January 14,
2022
Identification
Copyright
© 2022 Elsevier Ltd. All rights reserved.
