Evidence map›Paper›PMID 26888675›Full record

Trial reportThe Journal of bone and joint surgery. American volume2016

Motion Predicts Clinical Callus Formation: Construct-Specific Finite Element Analysis of Supracondylar Femoral Fractures.

Jacob Elkins, J Lawrence Marsh, Trevor Lujan, Richard Peindl, James Kellam, Donald D Anderson, William Lack

Abstract readClinical Trial
In one paragraph

Trial report in The Journal of bone and joint surgery. American volume, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 47 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
47citing 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

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

  1. Pooled it
  2. Article
  3. Observational
  4. Article
  5. Finite element andFrontiers in bioengineering and biotechnology · 2026
    Article
  6. [Establishment and comparative analysis of femoral biomechanical equivalent model].Sheng wu yi xue gong cheng xue za zhi = Journal of biomedical engineering = Shengwu yixue gongchengxue zazhi · 2025
    Article
  7. Article
  8. Article
  9. Effects of Plate-Bone Contact on Bridge Plate Fracture Fixation Biomechanics: Computational, Experimental, and Analytical Modeling.Journal of orthopaedic research : official publication of the Orthopaedic Research Society · 2025
    Article
  10. Article
  11. Article
  12. Article
  13. Article
  14. Article
  15. Article
  16. Article
  17. Mechanically compliant locking plates for diaphyseal fracture fixation: A biomechanical study.Journal of orthopaedic research : official publication of the Orthopaedic Research Society · 2025
    Article
  18. Article
  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

7 authors.

Jacob ElkinsDepartment of Orthopaedics and Rehabilitation, University of Iowa Hospitals and Clinics, Iowa City, Iowa.
J Lawrence MarshDepartment of Orthopaedics and Rehabilitation, University of Iowa Hospitals and Clinics, Iowa City, Iowa.
Trevor LujanDepartment of Mechanical and Biomedical Engineering, Boise State University, Boise, Idaho.
Richard PeindlDepartment of Orthopaedic Surgery, Carolinas Medical Center, Charlotte, North Carolina.
James KellamDepartment of Orthopaedic Surgery, University of Texas Health Science Center, Houston, Texas.
Donald D AndersonDepartment of Orthopaedics and Rehabilitation, University of Iowa Hospitals and Clinics, Iowa City, Iowa.
William LackDepartment of Orthopaedic Surgery and Rehabilitation, Loyola University Medical Center, Maywood, Illinois.

Funding

VPS35 D620N inhibits autophagy through disrupted hyaluronic acid-CD44 signalingP20GM109095 · NIGMS · BOISE STATE UNIVERSITY · PI OXFORD, JULIA THOM · 2014 to 2023
$22.7M
NIGMS NIH HHS P20 GM109095
6 · The paper itself

Abstract

backgroundMechanotransduction is theorized to influence fracture-healing, but optimal fracture-site motion is poorly defined. We hypothesized that three-dimensional (3-D) fracture-site motion as estimated by finite element (FE) analysis would influence callus formation for a clinical series of supracondylar femoral fractures treated with locking-plate fixation.

methodsConstruct-specific FE modeling simulated 3-D fracture-site motion for sixty-six supracondylar femoral fractures (OTA/AO classification of 33A or 33C) treated at a single institution. Construct stiffness and directional motion through the fracture were investigated to assess the validity of construct stiffness as a surrogate measure of 3-D motion at the fracture site. Callus formation was assessed radiographically for all patients at six, twelve, and twenty-four weeks postoperatively. Univariate and multivariate linear regression analyses examined the effects of longitudinal motion, shear (transverse motion), open fracture, smoking, and diabetes on callus formation. Construct types were compared to determine whether their 3-D motion profile was associated with callus formation.

resultsShear disproportionately increased relative to longitudinal motion with increasing bridge span, which was not predicted by our assessment of construct stiffness alone. Callus formation was not associated with open fracture, smoking, or diabetes at six, twelve, or twenty-four weeks. However, callus formation was associated with 3-D fracture-site motion at twelve and twenty-four weeks. Longitudinal motion promoted callus formation at twelve and twenty-four weeks (p = 0.017 for both). Shear inhibited callus formation at twelve and twenty-four weeks (p = 0.017 and p = 0.022, respectively). Titanium constructs with a short bridge span demonstrated greater longitudinal motion with less shear than did the other constructs, and this was associated with greater callus formation (p < 0.001).

conclusionsIn this study of supracondylar femoral fractures treated with locking-plate fixation, longitudinal motion promoted callus formation, while shear inhibited callus formation. Construct stiffness was found to be a poor surrogate of fracture-site motion. Future implant design and operative fixation strategies should seek to optimize 3-D fracture-site motion rather than rely on surrogate measures such as axial stiffness.

Indexed as

Fracture Fixation, InternalAgedBiomechanical PhenomenaBone PlatesBony CallusFemaleFemoral FracturesFinite Element AnalysisFracture HealingHumansLinear ModelsMaleMechanotransduction, CellularMiddle AgedModels, BiologicalMovement

Identifiers

PMID26888675
PMCPMC5141368

What OpenQuestion holds

Textmetadata
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.