The Effects of AFO Heel Height and Stiffness on Gait
University of Iowa
Summary
The proposed study evaluates the effect of ankle foot orthosis (AFO) heel height and stiffness on the forces and motion of the lower limb during over-ground walking in individuals who use an AFO for daily walking. Previous studies suggest that heel height and stiffness effect limb loading, but these data and the analysis techniques applied are limited. In this study, heel cushions with different height and stiffness's (4 conditions) will be placed in participants shoes and they will walk at controlled and self-selected speeds. Participants will also walk with their AFO as configured prior to enrollment, and with no AFO if possible. The proposed study will provide evidence that can be used by clinicians and researchers to align braces that most effectively improve function during every-day walking.
Description
In this study the investigators to evaluate the effect of ankle foot orthosis (AFO) heel height and stiffness on the forces and motion of the lower limb during over-ground walking in individuals who use an AFO for daily walking. Previous studies suggest that heel height and stiffness effect limb loading, but these data and the analysis techniques applied are limited. Two groups of subjects with impairments below the knee, that result in functional deficits and require daily AFO use, will be recruited for this study. The first group will have unilateral deficits associated with musculoskeletal…
Eligibility
- Age range
- 18–70 years
- Sex
- All
- Healthy volunteers
- No
GROUP 1 Patient Inclusion criteria * Ages: 18-70 * Daily AFO use to address unilateral, below knee functional deficits that result from limb injury or musculoskeletal disease (e.g. fracture, muscle and/or nerve injury, ankle arthritis) * Greater than 2 weeks using their current AFO * Ability to walk 50 feet without use of an assistive device (Cane, crutch, etc.) * Ability to walk at a slow to moderate pace * AFO fits into traditional footwear * Able to read and write in English and provide written informed consent GROUP 1 Patient Exclusion criteria * Pain \> 6/10 while walking during testin…
Interventions
- DeviceTall Soft
Tall heel wedge made of soft foam
- DeviceTall Firm
Tall heel wedge made of firm foam
- DeviceShort Soft
Short heel wedge made of soft foam
- DeviceShort Firm
Short heel wedge made of firm foam
Location
- University of IowaIowa City, Iowa