The development and validation of a new diagnostic sonographic enthesitis score for psoriatic arthritis: Diagnostic Ultrasound Enthesitis Tool (DUET).
OBJECTIVE The Diagnostic Ultrasound Enthesitis Tool (DUET) study aimed to develop and validate a new sonographic scoring system for enthesitis to aid PsA diagnosis. METHODS We prospectively enrolled patients with early PsA, psoriasis without arthritis (PsO), and non-inflammatory musculoskeletal symptoms as controls (...