Evidence map›Paper›PMID 34027333›Full record

ArticleEClinicalMedicine2021

Pioneering low-cost 3D-printed transtibial prosthetics to serve a rural population in Sierra Leone - an observational cohort study.

Merel van der Stelt, Martin P Grobusch, Abdul R Koroma, Marco Papenburg, Ismaila Kebbie, Masanga 3D prosthesis printing research group, Cornelis H Slump, Thomas J J Maal, Lars Brouwers

Abstract read
In one paragraph

Article in EClinicalMedicine, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
13citing papers in PubMed, 1 pooled it
–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

13 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
  2. Review
  3. Article
  4. Frugal Innovations in Orthopaedics.Current reviews in musculoskeletal medicine · 2025
    Review
  5. Article
  6. Applications of 3D printing in orthopedics: a scoping review.European journal of orthopaedic surgery & traumatology : orthopedie traumatologie · 2025
    Article
  7. Article
  8. Article
  9. Article
  10. Review
  11. Article
  12. Article
  13. 3D printing and prostheses: The current state-of-the-art and future directions.Journal of rehabilitation and assistive technologies engineering
    Review
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.

Merel van der SteltMasanga Medical Research Unit, Masanga Hospital, Masanga, Sierra Leone.
Martin P GrobuschMasanga Medical Research Unit, Masanga Hospital, Masanga, Sierra Leone.
Abdul R KoromaMasanga Medical Research Unit, Masanga Hospital, Masanga, Sierra Leone.
Marco PapenburgPapenburg Orthopedics B.V. Ravenstein, The Netherlands.
Ismaila KebbieNational Rehabilitation Programme/Centre, Ministry of Health and Sanitation, Freetown, Sierra Leone.
Masanga 3D prosthesis printing research group
Cornelis H SlumpTechnical Medicine, University of Twente, Enschede, The Netherlands.
Thomas J J MaalRadboudumc 3D lab, Radboud University Medical Center, Nijmegen, The Netherlands.
Lars BrouwersMasanga Hospital, Masanga, Sierra Leone.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundThere is a huge unmet global need for affordable prostheses. Amputations often happen in Sierra Leone due to serious infections, complex wounds, traffic accidents and delayed patient presentation to the hospital. However, purchasing a prosthesis is still beyond reach for most Sierra Leonean amputees.

methodWe applied computer-aided design (CAD) and computer-aided manufacturing (CAM) to produce low-cost transtibial prosthetic sockets. In February and March 2020, eight participants received a 3D printed transtibial prosthesis in the village of Masanga in Tonkolili district, Sierra Leone. Research was performed using questionnaires to investigate the use, participants' satisfaction, and possible complications related to the prostheses. Questionnaires were conducted prior to production of the prosthesis and five to six weeks after fitting the prosthesis. A personal short-term goal was set by the participants.

findingsCompetitively priced and fully functional prostheses were produced locally. After six weeks, all participants were still wearing the prosthesis and six of the eight participants reached their personal rehabilitation goals. Using their prostheses, all participants were no longer in need of their crutches.

interpretationWe have come a step closer to the production of low-cost prostheses for low-and middle-income countries (LMICs). The goal of our project is to perform long-term follow-up and to refine our concept of 3D printed prostheses for LMICs to provide practical solutions for a global health need unmet to date.

funding€ 15,000 was collected during a crowdfunding campaign in collaboration with the Dutch Albert Schweitzer Fund. Internship allowance for MvdS was obtained from the University of Twente. 3D-scanner, 3D-printer, and printing material were donated by Ultimaker BV and Shining 3D.

Indexed as

3D-printingFollow-upFused deposition modellingLow-costSierra LeoneTranstibial prosthetic socket

Identifiers

PMID34027333
PMCPMC8129890

What OpenQuestion holds

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LicenceCC BY
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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.