Spondyloarthritis & psoriatic arthritis
Peritenon extensor tendon inflammation at metacarpophalangeal joints level: a valuable ultrasound finding in the differential diagnosis between psoriatic arthritis and rheumatoid arthritis?
Authors' conclusion
PTI was found more frequently in PsA rather than in RA patients. Nevertheless, since no statistically significant difference was found between RA and PsA patients with less than 1 year of disease duration, PTI may represent an inflammatory feature of the early phases of both the diseases.
Study context
- Population
- Consecutive rheumatoid arthritis (RA) and psoriatic arthritis (PsA) patients with clinical involvement of at least one metacarpophalangeal (MCP) joint
- Participants
- 69 participants
- Exposure
- PsA vs RA
- PsAn = 32
- RAn = 37reference
- Outcome
- US peritenon extensor tendon inflammation (PTI) at MCP joint level
Methodological detailsconsecutive patients, ultrasound (US) of 2nd–5th MCP joints, B-mode and power Doppler
- Consecutive patients
- US of 2nd–5th MCP joints, B-mode and power Doppler
Main finding
As reported in the abstract
PTI prevalence
- PTI found in a significantly higher number of patients with PsA than RA
Observational data: associations, not effects.
Further findings
PTI prevalence, early disease (<1 year) (subgroup)
- No statistical difference between RA and PsA
Synovitis prevalence
- No statistically significant difference between RA and PsA
Original publication
Peritenon extensor tendon inflammation at metacarpophalangeal joints level: a valuable ultrasound finding in the differential diagnosis between psoriatic arthritis and rheumatoid arthritis? Clin Exp Rheumatol. Published 19 December 2024. doi:10.
Composed by AI from the published abstract and checked against it. How Briefs are made →