Evidence map›Paper›PMID 33678445›Full record

ArticleThe Journal of arthroplasty2021

A Deep Learning Tool for Automated Radiographic Measurement of Acetabular Component Inclination and Version After Total Hip Arthroplasty.

Pouria Rouzrokh, Cody C Wyles, Kenneth A Philbrick, Taghi Ramazanian, Alexander D Weston, Jason C Cai, Michael J Taunton, David G Lewallen, Daniel J Berry, Bradley J Erickson and 1 more

Abstract read
In one paragraph

Article in The Journal of arthroplasty, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 41 papers.

0numbers the graph read from it
0cells of the map it votes in
41citing 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

41 citing papers in PubMed.

  1. Review
  2. Article
  3. Article
  4. Article
  5. Article
  6. Review
  7. Article
  8. Article
  9. Article
  10. Article
  11. Deep Learning-Based Automatic Diagnosis System for Developmental Dysplasia of the Hip.IEEE journal of translational engineering in health and medicine · 2025
    Article
  12. Article
  13. Article
  14. Article
  15. Article
  16. Article
  17. Article
  18. Review
  19. Article
  20. 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

11 authors.

Pouria RouzrokhDepartment of Radiology, Mayo Clinic, Radiology Informatics Laboratory, Rochester, MN.
Cody C WylesDepartment of Health Sciences Research, Mayo Clinic, Rochester, MN; Department of Orthopedic Surgery, Mayo Clinic, Rochester, MN.
Kenneth A PhilbrickDepartment of Radiology, Mayo Clinic, Radiology Informatics Laboratory, Rochester, MN.
Taghi RamazanianDepartment of Health Sciences Research, Mayo Clinic, Rochester, MN; Department of Orthopedic Surgery, Mayo Clinic, Rochester, MN.
Alexander D WestonDepartment of Health Sciences Research, Mayo Clinic, Rochester, MN.
Jason C CaiDepartment of Radiology, Mayo Clinic, Radiology Informatics Laboratory, Rochester, MN.
Michael J TauntonDepartment of Health Sciences Research, Mayo Clinic, Rochester, MN; Department of Orthopedic Surgery, Mayo Clinic, Rochester, MN.
David G LewallenDepartment of Orthopedic Surgery, Mayo Clinic, Rochester, MN.
Daniel J BerryDepartment of Orthopedic Surgery, Mayo Clinic, Rochester, MN.
Bradley J EricksonDepartment of Radiology, Mayo Clinic, Radiology Informatics Laboratory, Rochester, MN.
Hilal Maradit KremersDepartment of Health Sciences Research, Mayo Clinic, Rochester, MN; Department of Orthopedic Surgery, Mayo Clinic, Rochester, MN.

Funding

Resource CoreP30AR076312 · NIAMS · MAYO CLINIC ROCHESTER · PI Daniel Berry · 2019 to 2026
$5.5M
Precision Orthopedics: Multimodal Data Infrastructure for Personalized Surgical Decisions in Joint ArthroplastyR01AR073147 · NIAMS · MAYO CLINIC ROCHESTER · PI Hilal Maradit Kremers · 2018 to 2026
$3.5M
NIAMS NIH HHS P30 AR076312NIAMS NIH HHS R01 AR073147
6 · The paper itself

Abstract

backgroundInappropriate acetabular component angular position is believed to increase the risk of hip dislocation after total hip arthroplasty. However, manual measurement of these angles is time consuming and prone to interobserver variability. The purpose of this study was to develop a deep learning tool to automate the measurement of acetabular component angles on postoperative radiographs.

methodsTwo cohorts of 600 anteroposterior (AP) pelvis and 600 cross-table lateral hip postoperative radiographs were used to develop deep learning models to segment the acetabular component and the ischial tuberosities. Cohorts were manually annotated, augmented, and randomly split to train-validation-test data sets on an 8:1:1 basis. Two U-Net convolutional neural network models (one for AP and one for cross-table lateral radiographs) were trained for 50 epochs. Image processing was then deployed to measure the acetabular component angles on the predicted masks for anatomical landmarks. Performance of the tool was tested on 80 AP and 80 cross-table lateral radiographs.

resultsThe convolutional neural network models achieved a mean Dice similarity coefficient of 0.878 and 0.903 on AP and cross-table lateral test data sets, respectively. The mean difference between human-level and machine-level measurements was 1.35° (σ = 1.07°) and 1.39° (σ = 1.27°) for the inclination and anteversion angles, respectively. Differences of 5⁰ or more between human-level and machine-level measurements were observed in less than 2.5% of cases.

conclusionWe developed a highly accurate deep learning tool to automate the measurement of angular position of acetabular components for use in both clinical and research settings. LEVEL OF EVIDENCE: III.

Indexed as

Arthroplasty, Replacement, HipDeep LearningHip ProsthesisAcetabulumHumansRadiographyacetabular component angleanteversion angleartificial intelligencedeep learninginclination angletotal hip arthroplasty

Identifiers

PMID33678445
PMCPMC8197739

What OpenQuestion holds

Textmetadata
LicenceTDM
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.