Evidence map›Paper›PMID 39895150›Full record

Trial reportPM & R : the journal of injury, function, and rehabilitation2025

The effects of microprocessor prosthetic knee use in early rehabilitation: A pilot randomized controlled trial.

Sara J Morgan, Janna L Friedly, Ian K Nelson, Rachael E Rosen, Andrew T Humbert, Brian J Hafner

Abstract readRandomized Controlled Trial
In one paragraph

Trial report in PM & R : the journal of injury, function, and rehabilitation, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.

0numbers the graph read from it
0cells of the map it votes in
2citing papers in PubMed
–field-weighted citation impact
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

2 citing papers in PubMed.

  1. Trial
  2. Article
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

6 authors.

Sara J MorganDepartment of Rehabilitation Medicine, University of Washington, Seattle, Washington, USA.ORCID https://orcid.org/0000-0001-8059-3659
Janna L FriedlyDepartment of Rehabilitation Medicine, University of Washington, Seattle, Washington, USA.ORCID https://orcid.org/0000-0002-7483-7888
Ian K NelsonDepartment of Rehabilitation Medicine, University of Washington, Seattle, Washington, USA.
Rachael E RosenDepartment of Rehabilitation Medicine, University of Washington, Seattle, Washington, USA.ORCID https://orcid.org/0000-0002-5076-2244
Andrew T HumbertDepartment of Rehabilitation Medicine, University of Washington, Seattle, Washington, USA.ORCID https://orcid.org/0000-0003-3512-2780
Brian J HafnerDepartment of Rehabilitation Medicine, University of Washington, Seattle, Washington, USA.ORCID https://orcid.org/0000-0001-6175-1869

Funding

Congressionally Directed Medical Research Programs W81XWH 17-1-0617
6 · The paper itself

Abstract

backgroundMicroprocessor-controlled prosthetic knees (MPKs) improve safety, stability, and mobility for people with transfemoral amputation. Despite these benefits, MPKs are often not used for people in early rehabilitation.

objectiveTo assess the feasibility of a study that compares MPKs and nonmicroprocessor knees (NMPKs) for people with recent transfemoral amputation and report on health outcomes after 3 months of use. Investigators hypothesized that MPK users would have better outcomes than NMPK users.

designPilot randomized controlled study.

settingInstitutional laboratory.

participantsAdults with recent unilateral transfemoral amputation, deemed ready for their first prosthesis, and weighed <125 kg. Eighteen participants enrolled; 15 completed the study.

interventionsParticipants were randomized to use a MPK or NMPK in their first prosthesis. MAIN OUTCOME MEASURE(S): Feasibility outcomes included recruitment, retention, and missing data. Health outcome measures included performance-based and self-reported measures of mobility, participation, step activity, and falls.

resultsEighteen of 24 planned participants enrolled in the study. Fifteen participants received a study prosthesis and completed the 3-month trial (MPK: n = 9; NMPK: n = 6). Participants with an MPK had significantly higher Prosthetic Limb Users Survey of Mobility (p = .01, Hedges' g: 1.70), Activity-specific Balance Confidence (p = .01, Hedges' g: 1.75), and Return to Normal Living Index (p = .05, Hedges' g: 0.54) scores compared to patients with NMPK. No other outcomes significantly differed between groups; effect sizes (0.47-1.75) across mobility outcomes indicated better outcomes in the MPK group.

conclusionsEnrollment goals were limited by the COVID-19 pandemic, but all 15 participants who received a study prosthesis finished the 3-month pilot study. The MPK group generally had better 3-month outcomes than the NMPK group, but few statistically significant differences were found due to the small sample size and heterogeneity within groups. Results from this pilot study can inform and power future studies that compare MPKs and NMPKs in early rehabilitation.

Indexed as

Amputation, SurgicalAmputeesKnee ProsthesisMicrocomputersAdultAgedFeasibility StudiesFemaleHumansMaleMiddle AgedPilot ProjectsProsthesis Design

Identifiers

PMID39895150
PMCPMC11974485

What OpenQuestion holds

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Registered trials

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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.