Spondyloarthritis & psoriatic arthritis
Ankle retinacula abnormalities as features of psoriatic arthritis: An ultrasound study
Authors' conclusion
US abnormalities of FR were more frequent in PsA than RA and appeared to be specific for PsA.
Study context
- Population
- Rheumatoid arthritis (RA) or psoriatic arthritis (PsA) patients with ankle pain and healthy controls
- Participants
- 80 participants
- Exposure
- Ultrasonography (US) of ankle retinacula in PsA vs RA vs healthy controls
- RAn = 37reference
- PsAn = 23
- Healthy controlsn = 20
- Outcome
- US abnormalities of the SPR and FR (B mode and power Doppler), plus synovitis and tenosynovitis
Main finding
As reported in the abstract
FR thickness
PsA
0.96
± 0.39
RA
0.64
± 0.15
P < 0.001
Observational data: associations, not effects.
Further findings
| Outcome | RA | PsA |
|---|---|---|
| Retinaculitis of FR (thickness≥1mm with hypervascularization or hypoechogenicity), ankles | 3% | 39 % |
- Other FR abnormalities (hypoechogenicity, PD positivity, periostosis) · PsA vs RA · more frequent in PsA
- P < 0.001
FR thickness cut-off of 1mm for diagnosis of PsA (ROC analysis)
- Sensitivity
- 49%
- Specificity
- 97%
SPR evaluation
- The two disease groups did not differ
Original publication
Ankle retinacula abnormalities as features of psoriatic arthritis: An ultrasound study. Joint Bone Spine. Published 4 October 2023. doi:10.
Composed by AI from the published abstract and checked against it. How Briefs are made →