Background Various observations have suggested that the course of COVID-19 might be less favourable in patients with inflammatory rheumatic and musculoskeletal diseases receiving rituximab compared with those not receiving rituximab. We aimed to investigate whether treatment with rituximab is associated with severe COVID-19 outcomes in patients with inflammatory rheumatic and musculoskeletal diseases.Methods In this cohort study, we analysed data from the French RMD COVID-19 cohort, which included patients aged 18 years or older with inflammatory rheumatic and musculoskeletal diseases and highly suspected or confirmed COVID-19. The primary endpoint was the severity of COVID-19 in patients treated with rituximab (rituximab group) compared with patients who did not receive rituximab (no rituximab group). Severe disease was defined as that requiring admission to an intensive care unit or leading to death. Secondary objectives were to analyse deaths and duration of hospital stay. The inverse probability of treatment weighting propensity score method was used to adjust for potential confounding factors (age, sex, arterial hypertension, diabetes, smoking status, body-mass index, interstitial lung disease, cardiovascular diseases, cancer, corticosteroid use, chronic renal failure, and the underlying disease [rheumatoid arthritis vs others]). Odds ratios and hazard ratios and their 95% CIs were calculated as effect size, by dividing the two population mean differences by their SD. This study is registered with ClinicalTrials.gov, NCT04353609.

Despite the tremendous benefit offered by primary prophylaxis, recurrent joint bleeding with progression to chronic synovitis and haemophilic arthropathy is still a daily concern for the multidisciplinary health care teams managing patients with severe haemophilia or haemophilia complicated by inhibitor development. Advanced stages of arthropathy could be prevented by regular assessment of musculoskeletal status and thus early detection of symptoms, daily rehabilitation exercises at home, and implementation of appropriate physiotherapy and medical training. Patient's education and psychological counselling are crucial. New tools such as magnetic resonance imaging are promising for the monitoring of these patients and might promote early detection of arthropathy and thus appropriate preventive measures to avoid further joint deterioration can be implemented. Medical synovectomy such as radionucleide synoviorthesis is a simple and non-invasive procedure that often delays the need for surgery which despite considerable improvement in techniques and postoperative rehabilitation remains a high-risk strategy in patients with severe haemophilia, especially those with inhibitors. In these high risk patients, availability of specific clotting factors such as activated prothrombin complex concentrate (FEIBA, Baxter, Vienna, Austria) and more recently, recombinant factor VIIa (rFVIIa, NovoSeven, Bagsvaerd, Denmark) has allowed to perform effective and safe orthopaedic procedures. The on-going EUREKA study will undoubtedly provide additional information about the optimal use of rFVIIa in this context.

Thirty-five male patients, aged 34-79 yr, with definite rheumatoid arthritis (RA) were recruited from out-patient clinics and randomized to receive monthly injections of testosterone enanthate 250 mg or placebo as an adjunct therapy for 9 months. Endpoints included disease activity parameters and bone mineral density (BMD). At baseline, there were negative correlations between the ESR and serum testosterone (r = -0.42, P < 0.01) and BMD (hip, r = -0.65, P < 0.01). A total of 29.6% of all patients had at least one vertebral fracture, most having multiple fractures. Back pain, however, was not more prevalent in fracture patients (55% vs 50%). Disease activity was significantly higher in the fracture group (joint score P < 0.05, rheumatoid factor P < 0.01). Thirty patients completed the trial, 15 receiving testosterone and 15 receiving placebo. There were significant rises in serum testosterone, dihydrotestosterone and oestradiol in the treatment group. There was no significant effect of treatment on disease activity overall, five patients receiving testosterone underwent a "flare'. Differences in mean BMD following testosterone or placebo were non-significant (spine: +1.2% vs -1.1%; femur: -0.3% vs +0.3%). There was no suggestion of a positive effect of testosterone on disease activity in men with RA.

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An easy transfer for parents is associated with feeling ready and considering that the coordination between teams is good. Health providers should consider these requisites for a successful transfer.