Ultrasound definition of enthesitis in spondyloarthritis and psoriatic arthritis: arrival or starting point?

Enthesitis has a key role in the diagnosis, classification and management of patients with spondyloarthritis and psoriatic arthritis. Clinical assessment of enthesitis is known to be inaccurate mainly due to its poor specificity. In this context, ultrasound has the potential to improve the evaluation of enthesitis and, therefore, the management of patients with spondyloarthritis and psoriatic arthritis. In this viewpoint, we review the Outcome Measures in Rheumatology (OMERACT) definitions for ultrasound enthesitis, highlighting their current limits and potential implications on rheumatology research and clinical practice.
Competing Interests: Competing interests: EF has received speaking fees from AbbVie, Amgen, BMS, Janssen, Lilly, Novartis, Roche, Pfizer and UCB Pharma. WG has received speaking fees from Celltrion and Pfizer. All other authors declare no competing interests.
(© Author(s) (or their employer(s)) 2021. No commercial re-use. See rights and permissions. Published by BMJ.)