Spondyloarthritis & psoriatic arthritis
Validation and incorporation of digital entheses into a preliminary GLobal OMERACT Ultrasound DActylitis Score (GLOUDAS) in psoriatic arthritis
Authors' conclusion
We have produced a consensus-driven ultrasound dactylitis scoring system that has shown acceptable interobserver reliability and excellent intraobserver reliability.
Study context
- Population
- Cadaveric finger specimens and patients with psoriatic dactylitis
- Outcome
- Generation of a GLobal OMERACT Ultrasound DActylitis Score (GLOUDAS) in PsA and its reliability
Methodological detailsstepwise process, cadaveric and histological validation, Delphi consensus among international experts
- Stepwise process
- Cadaveric and histological validation
- Delphi consensus among international experts
Recommendations
As reported in the abstract
Reliability of GLOUDAS
- Interobserver reliability for dactylitis components, fair to good (κ)
- 0.39-0.71
- Intraobserver reliability for dactylitis components, good to excellent (κ)
- 0.80-0.88
- Interobserver intraclass correlation coefficient (ICC), total B-mode score
- 0.98
- Interobserver ICC, total Doppler mode score
- 0.99
- Intraobserver ICC, total B-mode and Doppler mode scores (both modes)
- 0.98
Further findings
- Entheses identified in cadaveric fingers
- 32
- Entheses selected for inclusion in GLOUDAS after consensus
- 12
- Entheseal tissue confirmed in all cadaveric samples
- US components agreed: synovitis, tenosynovitis, enthesitis, subcutaneous tissue inflammation, periextensor tendon inflammation
Original publication
Validation and incorporation of digital entheses into a preliminary GLobal OMERACT Ultrasound DActylitis Score (GLOUDAS) in psoriatic arthritis. Ann Rheum Dis. Published 15 July 2024. doi:10.
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