Evidence map›Paper›PMID 42249074›Full record

ArticleNPJ digital medicine2026

Portable biomechanics laboratory enables clinically accessible movement analysis from a handheld smartphone.

J D Peiffer, Kunal Shah, Irina Djuraskovic, Shawana Anarwala, Kayan Abdou, Rujvee Patel, Prakash Jayabalan, Brenton Pennicooke, R James Cotton

Abstract read
In one paragraph

Article in NPJ digital medicine, 2026. 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. Functional, molecular, and digital measurements of biological age.The Journal of clinical investigation · 2026
    Review
  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

9 authors.

J D PeifferShirley Ryan AbilityLab, Chicago, IL, USA.
Kunal ShahShirley Ryan AbilityLab, Chicago, IL, USA.
Irina DjuraskovicShirley Ryan AbilityLab, Chicago, IL, USA.
Shawana AnarwalaShirley Ryan AbilityLab, Chicago, IL, USA.
Kayan AbdouShirley Ryan AbilityLab, Chicago, IL, USA.
Rujvee PatelDepartment of Neurological Surgery, Washington University School of Medicine, St. Louis, MO, USA.
Prakash JayabalanShirley Ryan AbilityLab, Chicago, IL, USA.
Brenton PennicookeDepartment of Neurological Surgery, Washington University School of Medicine, St. Louis, MO, USA.
R James CottonShirley Ryan AbilityLab, Chicago, IL, USA. rcotton@sralab.org.

Funding

Technology DevelopmentP2CHD101913 · NICHD · STANFORD UNIVERSITY · PI DELP, SCOTT L · 2020 to 2024
$4.1M
Predictive Gait-Based Biomarkers for Fall Risk in Lower-Limb Prosthesis UsersR01HD114776 · NICHD · REHABILITATION INSTITUTE OF CHICAGO D/B/A SHIRLEY RYAN ABILITYLAB · PI Ronald James Cotton · 2024 to 2026
$2.0M
NICHD NIH HHS P2C HD101913NICHD NIH HHS R01 HD114776NIH HHS P2CHD101913NIH HHS R01HD114776NSF DGE-2234667
6 · The paper itself

Abstract

Movement directly reflects neurological and musculoskeletal health, yet objective biomechanical assessment is rarely available in routine care. We introduce Portable Biomechanics Laboratory (PBL), a platform for fitting biomechanical models to handheld smartphone video. We validate PBL on over 15 hours of data synchronized to ground truth motion capture, finding joint-angle errors < 3

Identifiers

PMID42249074
PMCPMC13562619

What OpenQuestion holds

Textmetadata
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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.