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Perception of Socket Alignment Perturbations in Transtibial Prosthetic Amputees

This study by David A. Boone, PhD, and team aimed to determine how amputees perceive and communicate about alignment perturbations in their prostheses, crucial for describing fit and comfort. The research involved inducing controlled perturbations in prosthetic alignment and evaluating subjects' perceptions while standing and walking. Results indicated differing perceptions for angular and translational perturbations in sagittal and coronal planes. The study highlights the importance of subjective perception in prosthetic alignment assessment.

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Perception of Socket Alignment Perturbations in Transtibial Prosthetic Amputees

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  1. 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

  2. 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.

  3. 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.

  4. Prosthetics Alignment Perception Instrument Software interface: Questions for specific prosthetic malalignment.

  5. 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.

  6. Conclusions • Results suggested that people with amputation’s perceptions were: • Good indicators of coronal angle malalignments. • Less reliable for defining other alignment conditions.

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