Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Experiment Videos

Intramedullary nails with two lag screws.

C J Brown1, C J Wang, A L Yettram

  • 1Department of Mechanical Engineering, Brunel University, Uxbridge, UB8 3PH, UK. chris.brown@brunel.ac.uk

Clinical Biomechanics (Bristol, Avon)
|June 9, 2004
PubMed
Summary
This summary is machine-generated.

Related Concept Videos

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

A Computational Community Blind Challenge on Pan-Coronavirus Drug Discovery Data.

Journal of chemical information and modeling·2026
Same author

Factors affecting the efficacy of human leukocyte antigen-selected platelet provision: A large retrospective study in the United Kingdom.

Transfusion medicine (Oxford, England)·2025
Same author

Effect of Kono-S anastomosis on reducing postoperative recurrence rates in Crohn's disease: a systematic review and meta-analysis.

Techniques in coloproctology·2024
Same author

A cost-utility study of elective haemorrhoidectomies in Canada.

Colorectal disease : the official journal of the Association of Coloproctology of Great Britain and Ireland·2024
Same author

Novel Ameloblastin Variants, Contrasting Amelogenesis Imperfecta Phenotypes.

Journal of dental research·2023
Same author

Abstracts of presentations to the Annual Meetings of the Canadian Society of Colon and Rectal Surgeons Canadian Association of General Surgeons Canadian Association of Thoracic Surgeons: Canadian Surgery Forum, London, Ont., Sept. 19 to 22, 2002.

Canadian journal of surgery. Journal canadien de chirurgie·2023

Dual lag screws in intramedullary nails may improve stability in patients with good bone quality. However, this configuration, especially with a slotted screw hole, does not significantly reduce the risk of cut-out failure.

Area of Science:

  • Orthopaedic biomechanics
  • Finite element analysis
  • Implant design

Background:

  • Intramedullary nails with single lag screws can fail at the screw insertion point.
  • Dual lag screw configurations and slotted insertion holes are proposed to enhance fixation.
  • Understanding failure mechanisms is crucial for improving implant performance.

Purpose of the Study:

  • To evaluate the structural integrity of intramedullary nails using two lag screws.
  • To provide guidance on selecting appropriate intramedullary nailing devices.
  • To analyze the biomechanical effects of a slotted upper lag screw insertion hole.

Main Methods:

  • Finite element analysis (FEA) was employed to simulate bending and torsion load cases.
  • Alternative construct designs, including dual lag screws and slotted holes, were considered.

Related Experiment Videos

  • Analysis focused on load sharing, overall stiffness, and cut-out potential.

    • Main Results:

    • Dual lag screws can enhance stability in optimal bone conditions and high-load scenarios.
    • The study assessed load distribution between the lag screws.
    • The potential for cut-out failure was a key outcome measure.

    Conclusions:

    • A slotted hole for the upper lag screw may not significantly mitigate cut-out risks.
    • Dual lag screws might be beneficial for specific patient populations but increase cut-out susceptibility.
    • Surgeons should carefully consider bone quality and expected loads when choosing fixation devices.