Hip osteoarthritis prevalence estimates by three radiographic scoring systems

Rosemarie Hirsch, Richard J. Fernandes, Stanley R. Pillemer, Marc C. Hochberg, Nancy E. Lane, Roy D. Altman, Daniel A. Bloch, William C. Knowler, Peter H. Bennett

Research output: Contribution to journalArticlepeer-review

34 Scopus citations


Objective. To estimate and compare the age- and sex-specific prevalence of radiographic hip osteoarthritis (RHOA) in a population-based study of the Pima Indians, using 3 atlas-based methods for assessing features of RHOA. Methods. Pelvic radiographs from 755 Pima Indians age ≤45 years enrolled in a population-based study were read using the Kellgren/Lawrence (K/L) grading scale (grade 0-4) and 2 validated individual-radiographic-features (IRF) scales (grades 0-3 for narrowing and osteophytes). Results. The age- and sex- specific prevalence of RHOA among Pima Indians assessed using the K/L scale was < 10% in all age and sex groups. The prevalence of grade ≤2 osteophytes assessed using the 2 IRF scales were similar to each other in all age and sex groups. However, differences between the 2 IRF scoring systems were found for the prevalence of grade ≤2 joint space narrowing. Conclusion. Pima Indians have an age- and sex-specific prevalence of RHOA similar to that found in the US population. Our finding of different joint space narrowing prevalence by the 2 IRF grading scales supports the use of the same atlas-based case definitions for determining disease prevalence for comparative studies.

Original languageEnglish (US)
Pages (from-to)361-368
Number of pages8
JournalArthritis and Rheumatism
Issue number2
StatePublished - Feb 1998
Externally publishedYes

ASJC Scopus subject areas

  • Immunology and Allergy
  • Rheumatology
  • Immunology
  • Pharmacology (medical)


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