Spondyloarthritis & psoriatic arthritis
Value of ultrasound-assessed dactylitis in the early diagnosis of psoriatic arthritis
Authors' conclusion
Ultrasound-assessed lesions of dactylitis were associated with a diagnosis of PsA and the short-term development of PsA in patients with PsO and hand arthralgia.
Study context
- Population
- Adults with PsO and hand arthralgia, with or without other musculoskeletal complaints64 completed
- Participants
- 70 adults
- Outcome
- Association between US-assessed lesions of dactylitis and diagnosis of PsA
- Follow-up
- 12 months
Methodological detailslongitudinal, observational, single-centre, assessor-blinded
- Longitudinal
- Observational
- Single-centre
- Assessor-blinded
Main finding
As reported in the abstract
- Diagnosed with psoriatic arthritis (PsA) during 12-month follow-up
- 15 (23.4 %)
- At finger level, baseline B-mode (BM) and power Doppler (PD) synovitis, BM tenosynovitis, BM and PD enthesitis, and BM and PD peri-extensor tendon inflammation (PETI) associated with PsA diagnosis
- p < .05
- Predictive model (presence of PD synovitis and BM enthesitis) predicting PsA diagnosis
- χ2 = 35.38; p < .001
- Model accuracy
- 89.1 %
- Model sensitivity
- 86.7 %
- Model specificity
- 89.8 %
Observational data: associations, not effects.
Original publication
Value of ultrasound-assessed dactylitis in the early diagnosis of psoriatic arthritis. Semin Arthritis Rheum. Published 19 December 2024. doi:10.
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