Lyme arthritis in Western Europe: a multicentre retrospective study.

To characterize Lyme arthritis, with a focus on management, and outcome. Observational retrospective multicentre study in Western France, of all consecutive cases of Lyme arthritis, documented by Borrelia burgdorferi IgG on ELISA serological testing, confirmed by Western blot, with or without positive Borrelia PCR in synovial fluid, with no alternative diagnosis. We enrolled 52 patients (29 males), with a mean age of 43 ± 19.

Ultrasound-guided synovial biopsy improves diagnosis of septic arthritis in acute arthritis without enough analyzable synovial fluid: a retrospective analysis of 176 arthritis from a French rheumatology department.

To assess the diagnostic value of ultrasound-guided (US-guided) synovial biopsy in routine clinical practice in cases of acute and chronic arthritis. A retrospective, single-center study of US-guided synovial biopsies between 2003 and 2013. The clinical, laboratory, radiographic, synovial fluid, and histological and bacteriological results of synovial biopsies were analyzed.

Ultrasound characterization of ankle involvement in Löfgren syndrome.

Background: Bilateral ankle arthritis is a classic diagnostic criterion for Löfgren syndrome. The objective of this study was to use ultrasonography to characterize the articular and periarticular involvement of the ankles in patients with Löfgren syndrome.

Methods: Multicenter descriptive cohort study of patients with Löfgren syndrome who underwent ultrasonography of the ankles.

Combining cytology and microcrystal detection in nonpurulent joint fluid benefits the diagnosis of septic arthritis.

Objective: To evaluate the performance of combined cytology and microcrystal detection in joint fluid for diagnosing septic arthritis.

Methods: Retrospective single-center study of joint fluid samples from patients with manifestations suggesting acute or chronic arthritis. The absolute leukocyte count (/mm) was recorded; as well as the differential counts, particularly of neutrophils (%).