Modulating the margin of stability and inter-limb symmetry: A before-after trial on the acute effects of a novel hybrid passive spring damper ankle-foot orthosis in hemiparetic multiple sclerosis with drop-foot.
Nahid Tafti, Ensieh Pourhoseingholi
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In 30 seconds
This before-after clinical trial evaluated the effects of a novel hybrid passive spring-damper ankle-foot orthosis (HPSD-AFO) on dynamic stability in twelve mildly hemiparetic individuals with multiple sclerosis. The use of HPSD-AFO resulted in significantly reduced step width and stride time, with bilateral decreases in anteroposterior margin of stability (AP MoS) and increased mediolateral margin of stability (ML MoS) on the affected side, enhancing inter-limb symmetry.
Key findings
- Gait with HPSD-AFO significantly reduced step width and stride time.
- AP MoS decreased bilaterally with HPSD-AFO use.
- ML MoS increased on the affected side while decreasing on the non-affected side.
- Inter-limb symmetry improved significantly across spatiotemporal and dynamic stability metrics.
Why it matters
Improving dynamic stability and inter-limb symmetry in individuals with multiple sclerosis can reduce fall risk and enhance mobility. The findings suggest that the HPSD-AFO may be a beneficial intervention for gait improvement in this population.