Evidence map›Paper›PMID 30409168›Full record

ArticleJournal of neuroengineering and rehabilitation2018

Amputee perception of prosthetic ankle stiffness during locomotion.

Max K Shepherd, Alejandro F Azocar, Matthew J Major, Elliott J Rouse

Open access · goldAbstract read
In one paragraph

Article in Journal of neuroengineering and rehabilitation, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers.

0numbers the graph read from it
0cells of the map it votes in
16citing papers in PubMed
3.4field-weighted citation impact, top 7% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

16 citing papers in PubMed, 76 citations in OpenAlex.

  1. User preference in the personalized control of an ankle prosthesis: a case study.Journal of neuroengineering and rehabilitation · 2026
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  6. Investigating the Association of Quantitative Gait Stability Metrics With User Perception of Gait Interruption Due to Control Faults During Human-Prosthesis Interaction.IEEE transactions on neural systems and rehabilitation engineering : a publication of the IEEE Engineering in Medicine and Biology Society · 2023
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  9. Can humans perceive the metabolic benefit provided by augmentative exoskeletons?Journal of neuroengineering and rehabilitation · 2022
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  12. Understanding patient preference in prosthetic ankle stiffness.Journal of neuroengineering and rehabilitation · 2021
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  15. Patient-Preferred Prosthetic Ankle-Foot Alignment for Ramps and Level-Ground Walking.IEEE transactions on neural systems and rehabilitation engineering : a publication of the IEEE Engineering in Medicine and Biology Society · 2021
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

4 authors at 2 institutions in 1 country.

Max K ShepherdShirley Ryan AbilityLab, Room 11-1414, 355 E Erie St, Chicago, IL, 60611, USA. maxshep@u.northwestern.edu.ORCID 0000-0001-6066-9222
Alejandro F AzocarNeurobionics Lab, University of Michigan, Ann Arbor, MI, 48109, USA.
Matthew J MajorNorthwestern University Feinberg School of Medicine, Department of Physical Medicine and Rehabilitation, 710 North Lake Shore Drive, #1022, Chicago, IL, 60611, USA.
Elliott J RouseNeurobionics Lab, University of Michigan, Ann Arbor, MI, 48109, USA.ORCID 0000-0003-3880-1527
Northwestern University · USUniversity of Michigan · US

Funding

American Heart Association-American Stroke Association 16PRE31160018
6 · The paper itself

Abstract

backgroundProsthetic feet are spring-like, and their stiffness critically affects the wearer's stability, comfort, and energetic cost of walking. Despite the importance of stiffness in ambulation, the prescription process often entails testing a limited number of prostheses, which may result in patients receiving a foot with suboptimal mechanics. To understand the resolution with which prostheses should be individually optimized, we sought to characterize below-knee prosthesis users' psychophysical sensitivity to prosthesis stiffness.

methodsWe used a novel variable-stiffness ankle prosthesis to measure the repeatability of user-selected preferred stiffness, and implemented a psychophysical experiment to characterize the just noticeable difference of stiffness during locomotion.

resultsAll eight subjects with below-knee amputation exhibited high repeatability in selecting their Preferred Stiffness (mean coefficient of variation: 14.2 ± 1.7%) and were able to correctly identify a 7.7 ± 1.3% change in ankle stiffness (with 75% accuracy).

conclusionsThis high sensitivity suggests prosthetic foot stiffness should be tuned with a high degree of precision on an individual basis. These results also highlight the need for a pairing of new robotic prescription tools and mechanical characterizations of prosthetic feet.

Indexed as

AmputeesArtificial LimbsPerceptionProsthesis DesignBiomechanical PhenomenaFemaleHumansMalePerceptionProstheticsStiffnessVariable-stiffness

Identifiers

PMID30409168
PMCPMC6225626
OpenAlexW2900219638

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.