Joint and muscle inflammatory disease: A scoping review of the published evidence
Authors' conclusion
The spectrum of joint and muscle inflammatory diseases encompasses many diagnoses including primitive and secondary myositis associated with RA or arthritis mimicking RA.
Study context
- Population
- Published reports of patients presenting with both myositis and polyarthritis (IIM overlapping with RA)reports included
- Participants
- 280 reports
- Outcome
- Map the field of research to explore the potential diagnoses in patients presenting with both myositis and polyarthritis
Methodological detailssystematic search of MEDLINE/PubMed and Web of Science, no publication date limit
- Systematic search of MEDLINE/PubMed and Web of Science
- No publication date limit
Main finding
As reported in the abstract
Diagnoses associating myositis with polyarthritis (13 different diagnoses)
- Antisynthetase syndrome
- 29.6%, n=83
- Overlap myositis with RA
- 16.1%, n=45
- Drug-induced myositis
- 20.0%, n=56
- Rheumatoid myositis
- 7.5%, n=21
- Inclusion body myositis
- 1.8%, n=5
- Overlap with connective tissue disease
- 20.0%, n=56
- Others
- 5.0%, n=14
Further findings
Reporting of key data in the included studies
- RF status reported
- 56.8% (n=151)
- ACPA status reported
- 18.8% (n=50)
- Presence or absence of bone erosions reported
- 45.1% (n=120)
- Heterogeneity in the definition of overlap myositis and the characteristics of RA
Original publication
Joint and muscle inflammatory disease: A scoping review of the published evidence. Semin Arthritis Rheum. Published 13 May 2023. doi:10.
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