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Related Experiment Videos

Radiographic assessment. Introduction: existing methodology.

L C Rovati1

  • 1Department of Clinical Pharmacology, Rotta Research Laboratorium, Monza, Italy.

Osteoarthritis and Cartilage
|July 27, 1999
PubMed
Summary

Plain radiography is standard for assessing osteoarthritis structural changes. However, the small yearly changes in joint space narrowing suggest a need for improved radiographic outcome measures in clinical trials.

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Area of Science:

  • Orthopedics
  • Radiology
  • Rheumatology

Background:

  • Plain radiography is the gold standard for evaluating structural changes in osteoarthritis (OA).
  • Standardized methodologies exist for hip, knee, and hand joint radiography, including views, positioning, and quality control.
  • Radiographic outcomes are crucial for assessing OA progression and treatment efficacy.

Purpose of the Study:

  • To review the current role of plain radiography in assessing osteoarthritis.
  • To evaluate the utility of joint space narrowing as a primary outcome in OA clinical trials.
  • To highlight the need for refined radiographic outcome measures.

Main Methods:

  • Review of existing literature on radiographic assessment of osteoarthritis.
  • Analysis of standardized radiographic techniques for hip, knee, and hand joints.
  • Evaluation of studies measuring longitudinal joint space narrowing.

Main Results:

  • Joint space narrowing is the primary outcome for hip and knee OA, and a secondary outcome for hand OA.
  • Longitudinal studies show yearly joint space narrowing changes can be minimal (<0.1mm/year).
  • The clinical significance of these small changes is often questionable.

Conclusions:

  • Current radiographic methods for OA assessment are well-established.
  • The small magnitude of change in joint space narrowing poses challenges for clinical trial interpretation.
  • Further refinement of radiographic outcome definitions is necessary for prospective OA trials.

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