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Noah J. Rosenblatt, PhD; Angela Bauer, CPO; David Rotter, CPO; Mark D. Grabiner, PhD

Active dorsiflexing prostheses may reduce trip-related fall risk in people with transtibial amputation. Noah J. Rosenblatt, PhD; Angela Bauer, CPO; David Rotter, CPO; Mark D. Grabiner, PhD. Aim Determine contribution of active dorsiflexing prosthesis to minimum toe clearance (MTC). Relevance

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Noah J. Rosenblatt, PhD; Angela Bauer, CPO; David Rotter, CPO; Mark D. Grabiner, PhD

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  1. Active dorsiflexing prostheses may reduce trip-related fall risk in people with transtibial amputation Noah J. Rosenblatt, PhD; Angela Bauer, CPO; David Rotter, CPO; Mark D. Grabiner, PhD

  2. Aim • Determine contribution of active dorsiflexing prosthesis to minimum toe clearance (MTC). • Relevance • People with amputation are at increased risk of falling. • This may partly reflect amputation-related changes to MTC that can increase incidence of trips and fall risk.

  3. Method • 8 people with transtibial amputation walked on treadmill with their current foot at 2 grades and 3 velocities, then repeated protocol after 4 wk of accommodation with ProprioFoot. • Mixed-model, repeated-measures analysis of variance was used to compare MTC. • Curves representing tripping likelihood were derived from MTC distributions. • Multiple regression determined relative contributions of hip, knee, and ankle angles to MTC.

  4. Results • Regardless of condition: • MTC was approximately 70% larger with ProprioFoot. • Likelihood of tripping was reduced. • Regression analysis revealed: • MTC with ProprioFoot was sensitive to all 3 angles, with sensitivity of hip and ankle being greater.

  5. Conclusion • Overall, ProprioFoot may increase user safety by decreasing likelihood of tripping and pursuant likelihood of a fall.

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