Evidence map›Paper›PMID 34693002›Full record

ArticleLaryngoscope investigative otolaryngology2021

Three dimensional printing of a low-cost middle-ear training model for surgical management of otosclerosis.

Christopher Razavi, Deepa Galaiya, Seena Vafaee, Rui Yin, John P Carey, Russell H Taylor, Francis X Creighton

Abstract read
In one paragraph

Article in Laryngoscope investigative otolaryngology, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.

0numbers the graph read from it
0cells of the map it votes in
6citing 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

6 citing papers in PubMed.

  1. A hybrid 3D-printed temporal bone simulator with simulated bleeding for otologic training.European archives of oto-rhino-laryngology : official journal of the European Federation of Oto-Rhino-Laryngological Societies (EUFOS) : affiliated with the German Society for Oto-Rhino-Laryngology - Head and Neck Surgery · 2026
    Article
  2. Review
  3. Article
  4. The SAPIENS 3D-printed temporal bone model: a real tool for advanced otologic surgery education.European archives of oto-rhino-laryngology : official journal of the European Federation of Oto-Rhino-Laryngological Societies (EUFOS) : affiliated with the German Society for Oto-Rhino-Laryngology - Head and Neck Surgery · 2025
    Article
  5. A new 3D-printed temporal bone: 'the SAPIENS'-specific anatomical printed-3D-model in education and new surgical simulations.European archives of oto-rhino-laryngology : official journal of the European Federation of Oto-Rhino-Laryngological Societies (EUFOS) : affiliated with the German Society for Oto-Rhino-Laryngology - Head and Neck Surgery · 2024
    Article
  6. 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

7 authors.

Christopher RazaviDepartment of Otolaryngology - Head and Neck Surgery Johns Hopkins University School of Medicine Baltimore Maryland USA.ORCID https://orcid.org/0000-0002-1616-0135
Deepa GalaiyaDepartment of Otolaryngology - Head and Neck Surgery Johns Hopkins University School of Medicine Baltimore Maryland USA.
Seena VafaeeLaboratory for Computational Sensing and Robotics Johns Hopkins University Baltimore Maryland USA.
Rui YinLaboratory for Computational Sensing and Robotics Johns Hopkins University Baltimore Maryland USA.
John P CareyDepartment of Otolaryngology - Head and Neck Surgery Johns Hopkins University School of Medicine Baltimore Maryland USA.
Russell H TaylorLaboratory for Computational Sensing and Robotics Johns Hopkins University Baltimore Maryland USA.
Francis X CreightonDepartment of Otolaryngology - Head and Neck Surgery Johns Hopkins University School of Medicine Baltimore Maryland USA.ORCID https://orcid.org/0000-0003-3131-1162

Funding

RESEARCH TRAINING IN OTOLARYNGOLOGYT32DC000027 · NIDCD · JOHNS HOPKINS UNIVERSITY · PI CAREY, JOHN PATRICK · 1989 to 2023
$5.5M
Cooperative Control Robotics and Computer Vision: Development of Semi-Autonomous Temporal Bone and Skull Base SurgeryK08DC019708 · NIDCD · JOHNS HOPKINS UNIVERSITY · PI CREIGHTON, FRANCIS XAVIER · 2021 to 2025
$959k
NIDCD NIH HHS K08 DC019708NIDCD NIH HHS T32 DC000027
6 · The paper itself

Abstract

backgroundSurgical management of otosclerosis is technically challenging with studies demonstrating that outcomes are commensurate with surgical experience. Moreover, experts apply less force on the ossicular chain during prosthesis placement than their novice counterparts. Given the predicted decreasing patient pool and the rising cost of human temporal bone specimens it has become more challenging for trainees to receive adequate intraoperative or laboratory-based experience in this procedure. As such, there is a need for a low-cost training model for the procedure. Here we describe such a model.

methodsA surgical model of the middle ear was designed using computer aided design (CAD) software. The model consists of four components, the superior three dimensional (3D)-printed component representing the external auditory canal, a 90° torsion spring representing the incus, a 3D-printed base with a stapedotomy underlying the torsion spring, and a 3D-printed phone holder to facilitate video-recording of trials and subsequent calculation of the force applied on the modeled incus. Force applied on the incus is calculated based on Hooke's Law from post-trial computer-vision analysis of recorded video following experimental determination of the spring constant of the modeled incus.

resultsThe described model was manufactured with a total cost of $56.50. The spring constant was experimentally determined to be 97.0 mN mm/deg, resulting in an ability to detect force applied to the modeled incus across a range of 1.2 to 5200 mN.

conclusionsWe have created a low-cost middle-ear training model with measurable objective performance outcomes. The range of detectable force exceeds expected values for the task.Level of Evidence: IV.

Indexed as

3D printingotosclerosisresident educationstapedectomytraining model

Identifiers

PMID34693002
PMCPMC8513458

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-ND
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.