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

Knee instability after total knee arthroplasty

T K Fehring1, A L Valadie

  • 1Charlotte Orthopedic Specialists, Hip and Knee Center, NC 28204.

Clinical Orthopaedics and Related Research
|February 1, 1994
PubMed
Summary

Instability after total knee revision surgery is a significant concern, often stemming from ligament issues or surgical errors. Prompt diagnosis and targeted treatment are crucial for restoring knee stability and function.

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

Early failures in total knee arthroplasty.

Clinical orthopaedics and related research·2001
Same author

Articulating versus static spacers in revision total knee arthroplasty for sepsis. The Ranawat Award.

Clinical orthopaedics and related research·2000
Same author

Rotational malalignment of the femoral component in total knee arthroplasty.

Clinical orthopaedics and related research·2000
Same author

Underestimation of pelvic osteolysis: the value of the iliac oblique radiograph.

The Journal of arthroplasty·2000
Same author

Anatomy of provocative tests for impingement syndrome of the shoulder.

Journal of shoulder and elbow surgery·2000
Same author

Motion at the modular acetabular shell and liner interface. A comparative study.

Clinical orthopaedics and related research·1999

Area of Science:

  • Orthopedic Surgery
  • Biomedical Engineering

Background:

  • Total knee revision (TKR) is a complex procedure with potential complications.
  • Tibiofemoral instability is a recognized cause of TKR failure, necessitating further investigation.

Purpose of the Study:

  • To analyze the causes and outcomes of tibiofemoral instability following total knee revision.
  • To identify diagnostic methods and treatment strategies for this specific complication.

Main Methods:

  • Retrospective review of 126 total knee revisions, with a focus on 25 cases revised for tibiofemoral instability.
  • Clinical evaluation using the Hospital for Special Surgery (HSS) knee rating system.
  • Radiographic assessment using The Knee Society (TKS) scoring system.
  • Preoperative synovial fluid analysis.

Related Experiment Videos

Main Results:

  • Twenty-five percent of TKR cases were revised due to tibiofemoral instability.
  • Common causes included ligamentous imbalance/incompetence, malalignment, extensor mechanism deficiency, prosthetic design, and surgical error.
  • Average follow-up was 28 months.
  • Preoperative synovial fluid showed elevated red blood cells (average 64,000).
  • All patients achieved stable knees post-revision with improved clinical and radiographic scores.

Conclusions:

  • Tibiofemoral instability is a key diagnosis to consider in painful total knee arthroplasty revisions.
  • A combination of physical examination, dynamic radiography, and synovial fluid analysis aids diagnosis.
  • Treatment must address the underlying cause of instability, with prosthesis selection tailored to ligamentous deficiencies.