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Active Dorsiflexing Prostheses for Reduced Fall Risk in Transtibial Amputees

Study assesses impact of active dorsiflexing prostheses on toe clearance, reducing fall risk in amputees. Results show significant improvement in minimum toe clearance and tripping likelihood reduction. Prosthesis enhances user safety by lowering trip risk and fall incidence.

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Active Dorsiflexing Prostheses for Reduced Fall Risk in Transtibial Amputees

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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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