Evidence map›Paper›PMID 31191928›Full record

ArticleJournal of rehabilitation and assistive technologies engineering

Development and simulation of a passive upper extremity orthosis for amyoplasia.

Erik F Jensen, Joakim Raunsbæk, Jan N Lund, Tariq Rahman, John Rasmussen, Miguel N Castro

Open access · diamondAbstract read
In one paragraph

Article in Journal of rehabilitation and assistive technologies engineering. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.

0numbers the graph read from it
0cells of the map it votes in
3citing papers in PubMed
0.8field-weighted citation impact, top 31% 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

3 citing papers in PubMed, 17 citations in OpenAlex.

  1. Management of Upper Limb Deformities in Arthrogryposis Multiplex Congenita: A Narrative Review.Medical science monitor : international medical journal of experimental and clinical research · 2026
    Review
  2. Article
  3. 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 at 2 institutions in 2 countries.

Erik F JensenDepartment of Health Science and Technology, Aalborg University, Aalborg, Denmark.
Joakim RaunsbækDepartment of Health Science and Technology, Aalborg University, Aalborg, Denmark.
Jan N LundDepartment of Health Science and Technology, Aalborg University, Aalborg, Denmark.
Tariq RahmanDepartment of Biomedical Research, Nemours/Alfred I DuPont Hospital for Children, Wilmington, DE, USA.
John RasmussenDepartment of Materials and Production, Aalborg University, Aalborg, Denmark.
Miguel N CastroDepartment of Materials and Production, Aalborg University, Aalborg, Denmark.ORCID 0000-0001-5137-0368
Aalborg University · DKDuPont (United States) · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

introductionPeople who are born with arthrogryposis multiplex congenita are typically not able to perform activities of daily living (ADL) due to decreased muscle mass, joint contractures and unnatural upper extremity positioning. They are, therefore, potential users of an assistive device capable of aiding in ADL and increasing their independence. A passive orthosis can support the weight of their arm against gravity, allowing them to perform movements with less effort.

methodsThis study presents a prototype design with four degrees-of-freedom that uses musculoskeletal modelling to optimize the stiffness of the springs in the device to partially gravity balance the upper extremity while compensating for the usual internally rotated glenohumeral joint. A single subject-specific musculoskeletal model was developed to simulate the effects of the passive orthosis during 10 static postures during ADL.

resultsFor a given configuration using a mono- and a bi-articular spring, the simulations showed that spring stiffnesses of 400 Nm

conclusionBy augmenting residual muscle strength with a partially gravity-balanced passive orthosis, ADLs may be achievable for people with arthrogryposis multiplex congenita.

Indexed as

amyoplasiaarthrogryposismusculoskeletal modellingpartial gravity balancePassive orthosisupper extremity

Identifiers

PMID31191928
PMCPMC6453054
OpenAlexW2789480546

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC
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.