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Perception of socket alignment perturbations in amputees with transtibial prostheses. David A. Boone, PhD; Toshiki Kobayashi, PhD; Teri G. Chou, PhD; Adam K. Arabian, PhD; Kim L. Coleman, MS; Michael S. Orendurff, PhD; Ming Zhang, PhD. Aim
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Perception of socket alignment perturbations in amputees with transtibial prostheses David A. Boone, PhD; Toshiki Kobayashi, PhD; Teri G. Chou, PhD; Adam K. Arabian, PhD; Kim L. Coleman, MS; Michael S. Orendurff, PhD; Ming Zhang, PhD
Aim • Determine whether people with amputation could perceive and effectively communicate about alignment perturbations of their prostheses. • Relevance • Person with amputation’s subjective perception is only tool available to describe fit and comfort to prosthetist. • Few studies have investigated effect of alignment on perception.
Methods • Induced randomized controlled perturbation of angular and translational alignments in sagittal and coronal planes from aligned condition. • 11 subjects with transtibial prostheses. • Evaluated perception when standing and immediately after walking.
Prosthetics Alignment Perception Instrument Software interface: Questions for specific prosthetic malalignment.
Results • Coronal plane: • General statistical differences in static and dynamic measures of perceptions with angular perturbations. • Sagittal plane: • General statistical differences in late-stance dynamic measures of perceptions with angular perturbations and in early-stance dynamic measures of perceptions with translational perturbations.
Conclusions • Results suggested that people with amputation’s perceptions were: • Good indicators of coronal angle malalignments. • Less reliable for defining other alignment conditions.