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

Mechanical testing of spinal instrumentation.

R B Ashman1, J G Birch, L B Bone

  • 1Department of Research, Texas Scottish Rite Hospital, Dallas 75219.

Clinical Orthopaedics and Related Research
|February 1, 1988
PubMed
Summary

Investigating implant fatigue susceptibility is crucial for preventing clinical failure. Stress analysis, rather than lengthy cyclic testing, can predict implant endurance by comparing tensile stress to the material's endurance limit.

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

Comparison of Moseley and Rotterdam straight-line graphs in predicting leg lengths and leg-length discrepancy at maturity.

Journal of children's orthopaedics·2019
Same author

Infectious disease, fever, and the immune response.

Immunology today·2014
Same author

Interaction of amphiphilic aggregates with cells of the immune system.

Immunology today·2014
Same author

The construction and immunocompetence of totally allogeneic mouse radiation chimeras.

Immunology today·2014
Same author

Neurotrophins in the ventral tegmental area: Role in social stress, mood disorders and drug abuse.

Neuroscience·2014
Same author

Chiari osteotomy for severe deformity in legg-calvé-perthes disease.

Orthopedics·2014

Area of Science:

  • Biomaterials Science
  • Mechanical Engineering
  • Orthopedic Surgery

Background:

  • Implant failure due to fatigue from cyclic loading is a significant clinical concern.
  • Traditional long-run cyclic testing for fatigue susceptibility is time-consuming and inadequate.
  • Understanding implant fatigue is essential for improving long-term clinical outcomes.

Purpose of the Study:

  • To investigate the fatigue susceptibility of spinal implants.
  • To develop an alternative method for assessing implant fatigue without extensive cyclic testing.
  • To determine implant failure risk through stress analysis.

Main Methods:

  • Strain gauges were used to measure strain on implants during load-deformation testing.
  • Tensile stress, a key factor in metal fatigue failure, was calculated at critical implant sites.

Related Experiment Videos

  • The calculated tensile stresses were compared to the known endurance limits of common implant metals (stainless steel, chrome-cobalt alloys).

    • Main Results:

    • Tensile stress analysis provides a method to assess fatigue susceptibility.
    • This method allows for the determination of fatigue risk at specific sites on the implant.
    • The approach bypasses the need for prolonged cyclic load testing.

    Conclusions:

    • Stress analysis offers a viable alternative to cyclic testing for evaluating implant fatigue.
    • Determining tensile stress relative to the endurance limit can predict potential fatigue failure sites.
    • This method enhances the assessment of spinal implant durability and clinical longevity.