[1991] Clinical
(History, Physical Examination, Laboratory) Classification Criteria for Osteoarthritis
of the Hip, Classification Tree Format*
(See
traditional
format).
1. Hip pain
and
2a. Hip internal rotation
<15°
and
2b. ESR ≤ 45 mm/hour
(If ESR not available, substitute
hip flexion ≤115°)
or
3a. Hip internal rotation
≥ 15°
and
3b. Pain on hip internal rotation
and
3c. Morning stiffness of the hip
≤60 minutes
and
3d. Age > 50 years
*
This classification method yields a sensitivity of 86% and a specificity of
75%. ESR = erythrocyte sedimentation rate (Westergren).
R. Altman, G. Alarcon,
D. Appelrouth, D. Bloch, D. Borenstein, K. Brandt, et al. The American College
of Rheumatology criteria for the classification and reporting of osteoarthritis
of the hip. Arthritis Rheum 1991;34:505--514.
Web
editor's note: the original publication includes a graphic representation of
this tree in Figure 1. Reprints of the entire article are available through
the ACR Office upon request.
