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  4. The effect of ankle joint mobility when using an isocentric reciprocating gait orthosis (IRGO) on energy consumption in people with spinal cord injury: preliminary results

The effect of ankle joint mobility when using an isocentric reciprocating gait orthosis (IRGO) on energy consumption in people with spinal cord injury: preliminary results

Spinal Cord Series and Cases, 2015 · DOI: 10.1038/scsandc.2015.17 · Published: October 8, 2015

Spinal Cord InjuryAssistive TechnologyRehabilitation

Simple Explanation

This study examines how different ankle supports affect walking efficiency in people with spinal cord injuries using a specific type of walking aid called an isocentric reciprocating gait orthosis (IRGO). The researchers compared walking with IRGOs that either completely restricted ankle movement or allowed some ankle movement (dorsiflexion-assisted AFOs). The study found that allowing some ankle movement led to faster walking speeds, greater endurance, and reduced energy consumption compared to restricting ankle movement.

Study Duration
Not specified
Participants
4 SCI subjects
Evidence Level
Not specified

Key Findings

  • 1
    Increased walking speed was observed with dorsiflexion-assisted AFOs compared to solid AFOs.
  • 2
    Greater walking distance was achieved with dorsiflexion-assisted AFOs compared to solid AFOs.
  • 3
    A reduced physiological cost index (PCI) was demonstrated when using dorsiflexion-assisted AFOs compared to solid AFOs.

Research Summary

The study evaluated the effect of walking with isocentric reciprocating gait orthoses (IRGOs) utilizing two designs of ankle foot orthoses (AFOs) on specific outcome measures in people with spinal cord injury (SCI). Increased walking speed, increased distance walked and less PCI were demonstrated in walking with the IRGO incorporating dorsiflexion-assisted AFOs as compared to walking with an IRGO plus solid AFO as a control condition. The study demonstrated that people with SCI could walk at relatively higher speeds and with greater endurance and a reduced PCI when utilizing an IRGO with dorsiflexion-assisted AFO components compared to solid ones.

Practical Implications

Improved Walking Efficiency

The use of dorsiflexion-assisted AFOs with IRGOs can improve walking speed and endurance in people with SCI.

Reduced Energy Consumption

Dorsiflexion-assisted AFOs may reduce the energy expenditure required for walking with IRGOs, making it a more sustainable option for individuals with SCI.

Clinical Application

The findings suggest that clinicians should consider incorporating dorsiflexion-assisted AFOs into IRGO prescriptions for SCI patients to optimize gait performance and reduce energy cost.

Study Limitations

  • 1
    Small sample size
  • 2
    Lack of evaluation of compensatory motions
  • 3
    Subjective user acceptance was not evaluated

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