Volume 16, Issue 2 pp. 150-159
Original Article

The development of rating scales to evaluate experiential prosthetic foot preference for people with lower limb amputation

Talia R. Ruxin BA

Talia R. Ruxin BA

VA RR&D Center for Limb Loss and Mobility (CLiMB), VA Puget Sound Health Care System, Seattle, Washington, USA

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Elizabeth G. Halsne PhD, CPO, MS

Elizabeth G. Halsne PhD, CPO, MS

VA RR&D Center for Limb Loss and Mobility (CLiMB), VA Puget Sound Health Care System, Seattle, Washington, USA

Department of Rehabilitation Medicine, University of Washington, Seattle, Washington, USA

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Brian J. Hafner PhD

Brian J. Hafner PhD

Department of Rehabilitation Medicine, University of Washington, Seattle, Washington, USA

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Jane Shofer MS

Jane Shofer MS

VA RR&D Center for Limb Loss and Mobility (CLiMB), VA Puget Sound Health Care System, Seattle, Washington, USA

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Andrew H. Hansen PhD

Andrew H. Hansen PhD

Minneapolis Adaptive Design & Engineering (MADE) Program, Minneapolis VA Health Care System, Minneapolis, Minnesota, USA

Departments of Rehabilitation Medicine & Biomedical Engineering, University of Minnesota, Minneapolis, Minnesota, USA

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W. Lee Childers PhD

W. Lee Childers PhD

Extremity Trauma and Amputation Center of Excellence, Houston, Texas, USA

Center for the Intrepid, Department of Rehabilitation Medicine, Brooke Army Medical Center, Houston, Texas, USA

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Joshua M. Caputo PhD

Joshua M. Caputo PhD

Human Motion Technologies LLC (Humotech), Pittsburgh, Pennsylvania, USA

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David C. Morgenroth MD

Corresponding Author

David C. Morgenroth MD

VA RR&D Center for Limb Loss and Mobility (CLiMB), VA Puget Sound Health Care System, Seattle, Washington, USA

Department of Rehabilitation Medicine, University of Washington, Seattle, Washington, USA

Correspondence

David C. Morgenroth, VA RR&D Center for Limb Loss and Mobility (CLiMB), VA Puget Sound Health Care System, 1660 S. Columbian Way, Seattle, WA, USA.

Email: [email protected]

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First published: 17 June 2023

Abstract

Background

Selection of a foot is an important aspect of prosthetic prescription and vital to maximizing mobility and functional goals after lower limb amputation. Development of a standardized approach to soliciting user experiential preferences is needed to improve evaluation and comparison of prosthetic feet.

Objective

To develop rating scales to assess prosthetic foot preference and to evaluate use of these scales in people with transtibial amputation after trialing different prosthetic feet.

Design

Participant-blinded, repeated measures crossover trial.

Setting

Veterans Affairs and Department of Defense Medical Centers, laboratory setting.

Participants

Seventy-two male prosthesis users with unilateral transtibial amputation started, and 68 participants completed this study.

Interventions

Participants trialed three mobility-level appropriate commercial prosthetic feet briefly in the laboratory.

Main Outcome Measures

“Activity-specific” rating scales were developed to assess participants' ability with a given prosthetic foot to perform typical mobility activities (eg, walking at different speeds, on inclines, and stairs) and “global” scales to rate overall perceived energy required to walk, satisfaction, and willingness to regularly use the prosthetic foot. Foot preference was determined by comparing the rating scale scores, after laboratory testing.

Results

The greatest within-participant differences in scores among feet were observed in the “incline” activity, where 57% ± 6% of participants reported 2+ point differences. There was a significant association (p < .05) between all “activity-specific” rating scores (except standing) and each “global” rating score.

Conclusions

The standardized rating scales developed in this study could be used to assess prosthetic foot preference in both the research and clinical settings to guide prosthetic foot prescription for people with lower limb amputation capable of a range of mobility levels.

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