Steinbrocker Functional Class (Rheumatoid Arthritis)
The Steinbrocker functional classification of rheumatoid arthritis, by global functional capacity, classes I/II/III/IV.
Open the calculator → Runs in your browser. Data leaves only if you deliberately send a problem report from the interactive tool.
Example
- Steinbrocker class
- II - adequate despite discomfort / limited mobility
Result: Steinbrocker class II: functional capacity adequate for normal activities despite discomfort or limited joint mobility.
The tool opens with these values already filled in. Replace them with your own.
What the result means
- Class I
- Complete functional capacity; all usual duties without handicap.
- Class II
- Adequate for normal activities despite discomfort or limited mobility of one or more joints.
- Class III
- Adequate for little or none of the usual occupation or of self-care.
- Class IV
- Largely or wholly incapacitated; bedridden or wheelchair-bound, little or no self-care.
What you enter
- Steinbrocker class
How this is calculated
Steinbrocker O, Traeger CH, Batterman RC. Therapeutic criteria in rheumatoid arthritis. JAMA. 1949;140(8):659-662. Read the source ↗
A reference and educational tool. Not medical, legal, or financial advice, and not a substitute for clinician judgment.