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

Improved precision in quantifying knee alignment angle.

Berna Goker1, Joel A Block

  • 1Department of Internal Medicine, Gazi University, Ankara, Turkey. bgoker@yahoo.com

Clinical Orthopaedics and Related Research
|January 30, 2007
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

Glomerulonephritis in Takayasu arteritis is dominated by mesangial and AA amyloid lesions and often arises during remission: a case-based review.

Rheumatology international·2026
Same author

Society of Interventional Radiology Position Statement on Genicular Artery Embolization for Symptomatic Knee Osteoarthritis.

Journal of vascular and interventional radiology : JVIR·2026
Same author

Risk of Cancer in Patients With Primary Sjögren's Disease and Their Relatives.

International journal of rheumatic diseases·2026
Same author

Similar Pain Scores in Rheumatoid Arthritis and Osteoarthritis Over 45 Years Despite Dramatically Fewer Swollen Joints in Rheumatoid Arthritis: Are Scores Based as Much on Pain Sensitization and Patient Distress as on Inflammation and/or Structural Damage?

ACR open rheumatology·2026
Same author

A novel validated prognostic index for older patients in the emergency department: gazi index.

Current medical research and opinion·2026
Same author

SHAM-PAIN Trial: Genicular Artery Embolization for Reducing Pain in Medically Refractory Symptomatic Knee Osteoarthritis-A Randomized Sham-Controlled Pilot Study.

Journal of vascular and interventional radiology : JVIR·2026

A new digital method improves knee alignment angle measurement accuracy for knee osteoarthritis (KO) assessment. This technique offers superior precision over manual methods, aiding in early KO detection and management.

Area of Science:

  • Orthopedics
  • Radiology
  • Biomedical Engineering

Background:

  • Knee alignment angle, reflecting mechanical axis, correlates with knee osteoarthritis (KO) severity and progression.
  • Current quantification methods lack reproducibility due to imprecise landmark definition and measurement techniques.

Purpose of the Study:

  • To describe and validate a reproducible and sensitive method for determining knee alignment angle.
  • To compare the precision of a novel digital measurement technique against a conventional manual approach.

Main Methods:

  • Full-limb radiography was performed on 14 patients (28 knees) with symptomatic knee osteoarthritis.
  • Knee alignment angle (femoral and tibial mechanical axes) was measured using conventional manual and novel digital (Image J software) techniques.

Related Experiment Videos

  • Reproducibility was assessed via duplicate measurements on separate days.

    • Main Results:

    • The manual method showed limits of agreement of ±1.6 degrees, with a minimal detectable change of approximately 1.6 degrees.
    • The digital method demonstrated significantly improved precision with limits of agreement of ±0.4 degrees and a minimal detectable change of 0.4 degrees.
    • Both methods showed agreement, but the digital approach offered superior sensitivity.

    Conclusions:

    • A novel digital method using Image J software reliably determines knee mechanical axis with high precision.
    • This technique allows for the detection of knee alignment differences less than 1 degree, crucial for KO management.
    • The digital method enhances reproducibility and sensitivity in assessing knee alignment for knee osteoarthritis research and clinical practice.