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

Multidirectional stability of the Graf system

P J Strauss1, J E Novotny, D G Wilder

  • 1Spine Institute of New England, Williston, Vermont.

Spine
|April 15, 1994
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

Effects of whole body vibration on spinal proprioception in healthy individuals.

Work (Reading, Mass.)·2018
Same author

Height changes due to autotraction.

Clinical biomechanics (Bristol, Avon)·2013
Same author

In vivo measurement of intervertebral creep: a preliminary report.

Clinical biomechanics (Bristol, Avon)·2013
Same author

Variations in the examination of the medial collateral ligament of the knee.

Clinical biomechanics (Bristol, Avon)·2013
Same author

Comparative study of fracture gap motion in external fixation.

Clinical biomechanics (Bristol, Avon)·2013
Same author

Effect of two sitting postures on lumbar sagittal alignment and intervertebral discs in runners.

La Radiologia medica·2011
Same journal

Response to Preoperative Steroid Injections Can Predict Early Outcomes in Patients Undergoing Fusion for Degenerative Spondylolisthesis.

Spine·2026
Same journal

Comparing those Most Satisfied versus Least Satisfied Following Surgery for Cervical Spondylotic Myelopathy: Are there Differences in Baseline Characteristics?

Spine·2026
Same journal

Pseudoarthrosis After Posterior Spinal Fusion in Adolescent Idiopathic Scoliosis: A Multicenter Analysis of Revision Strategies and Outcomes.

Spine·2026
Same journal

To the Editor "Low-Density Lipoprotein Cholesterol and Statin Usage Are Associated With Rates of Pseudarthrosis Following Single-Level Posterior Lumbar Interbody Fusion" by Lavu et al.

Spine·2026
Same journal

Sarcopenia Increases Adjacent Segment Degeneration Risk within 3 Years of Anterior Cervical Discectomy and Fusion.

Spine·2026
Same journal

Two-Year Cervical Alignment Trajectories and Associated Radiographic Factors after Posterior Spinal Fusion for Lenke Type 1 Adolescent Idiopathic Scoliosis.

Spine·2026
See all related articles

The Graf fixation system stabilizes the spine by reducing motion and flexibility. This study assessed its immediate biomechanical effects on spinal motion segments in cadavers.

Area of Science:

  • Spinal Biomechanics
  • Orthopedic Surgery
  • Implant Technology

Background:

  • Spinal fixation systems are crucial for stabilizing the spine after injury or surgery.
  • Understanding the biomechanical impact of these systems is essential for optimizing patient outcomes.
  • The Graf fixation system is a specific implant used for spinal stabilization.

Purpose of the Study:

  • To evaluate the biomechanical effects of the Graf fixation system on spinal motion segments.
  • To determine how the Graf system influences range of motion and flexibility under various loading conditions.

Main Methods:

  • Spinal motion segments (L2-3 and L4-5) were tested in three states: intact, destabilized (via laminectomy), and restabilized with the Graf system.
  • Segments were subjected to compressive, flexion-extension, lateral bending, and axial rotation moments.

Related Experiment Videos

  • Measurements included main and coupled motions, flexibilities, and balance point location.

    • Main Results:

    • Laminectomy significantly altered the balance point; the Graf system largely restored it.
    • The Graf system significantly reduced compressive compliance, range of motion (flexion-extension, axial rotation), and flexibility compared to the destabilized state.
    • Lateral bending showed complex changes, with reduced main/coupled rotations but increased axial rotation after restabilization.

    Conclusions:

    • The Graf fixation system effectively reduces spinal motion and flexibility under specific loading conditions.
    • These findings represent immediate stabilization characteristics in cadaveric models.
    • Further investigation into the long-term fatigue properties of the Graf system is warranted.