Adrian Richter

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Anthropometric characteristics, particularly body mass, are important factors in the development and progression of varus/valgus angular deformities of the knee and have long-term implications including increased risk of osteoarthritis. However, information on how excessive body weight affects the biomechanics of dynamic activities in children is limited.(More)
OBJECTIVE To compare the 24-month course of health-related quality of life (HRQoL) in patients with long-standing RA treated with a conventional synthetic (cs) or a first, second or third biologic (b) DMARD in daily rheumatological care. METHODS Patients enrolled in the German biologics register RABBIT who were observed over at least 12 months were(More)
OBJECTIVE To compare the approved treatment of rheumatoid arthritis using rituximab + methotrexate (RTX + MTX) versus the off-label treatment variants of RTX in monotherapy or RTX in combination with leflunomide (RTX + LEF). METHODS We included RTX-naive patients enrolled in the German biologics register RABBIT (Rheumatoid Arthritis: Observation of(More)
Chlamydia trachomatis, Mycoplasma hominis and Ureaplasma urealyticum infections not only jeopardize fertility but also pose a risk for infertility treatment and resulting pregnancies. Routine screening tests or empirical antibiotic treatment of infertile couples may be justified by the prevalence of these organisms. We studied the wives in 40 consecutive(More)
OBJECTIVE This observational cohort study investigated the impact of biological (b) disease-modifying antirheumatic drugs (DMARDs) on the outcomes of serious infections (SIs) in patients with rheumatoid arthritis. METHODS We investigated outcomes of SIs observed in 947 patients enrolled in the German biologics register RABBIT(Rheumatoid arthritis:(More)
BACKGROUND METARTHROS (Metabolic impact on joint and bone disease) is a nationwide German network to investigate the overlap between inflammatory and metabolic diseases. The objective of this study was to compare the body mass index (BMI) distribution in patients with early and established rheumatoid arthritis (RA) with data from the general population, and(More)
BACKGROUND The aim was to estimate the impact of individual risk factors and treatment with various disease-modifying antirheumatic drugs (DMARDs) on the incidence of myocardial infarction (MI) in patients with rheumatoid arthritis (RA). METHODS We analysed data from 11,285 patients with RA, enrolled in the prospective cohort study RABBIT, at the start of(More)
The study of secondary patient data, particularly represented by claims data, has increased in recent years. The strength of this approach involves easy access to data that have been generated for administrative purposes. By contrast, collection of primary data for research is time-consuming and may therefore appear outdated. Both administrative data and(More)
OBJECTIVE To investigate the risk of developing lower intestinal perforations (LIPs) in patients with rheumatoid arthritis (RA) treated with tocilizumab (TCZ). METHODS In 13 310 patients with RA observed in the German biologics register Rheumatoid Arthritis: Observation of Biologic Therapy, 141 serious gastrointestinal events possibly associated with(More)