A quarter of patients time their early rheumatoid arthritis onset differently than physicians.

Objective: Early rheumatoid arthritis (RA) treatment requires timely recognition. This large, multicentre study compared patient-reported vs physician-reported onset of early RA.

Methods: Patients from the Canadian Early ArThritis CoHort with early/suspected RA (persistent synovitis <1 year) completed questionnaires asking about the date of symptom onset; and rheumatologists date of onset for persistent synovitis.

Association of Arthritis Onset with Influenza: Analysis of the Canadian Early Inflammatory Arthritis Cohort.

Objective: To evaluate seasonal patterns of early inflammatory arthritis (IA) onset and potential associations with IA symptom onset.

Methods: The Canadian Early Arthritis Cohort (CATCH) is an inception cohort study of adults with early (12 months or less) IA. We used patient reports of symptom onset as a proxy of IA onset and examined the seasonal distribution of IA onset over 10 years.

Comparison of three imaging techniques in diagnosis of chondrocalcinosis of the knees in calcium pyrophosphate deposition disease.

Objective: To study the role of different imaging modalities, ultrasonography, conventional radiography (CR) and CT, in visualization of chondrocalcinosis of the knees in patients with CPDD.

Methods: Twenty-five patients (14 males and 11 females) with CPDD were enrolled in the study. Diagnosis was made according to D.