Clinical Research Directory

Inclusion Criteria: * Age \>18 years * Clinically relevant arthritis in one or more joints as assessed by the treating rheumatologist, including RA, SpA, connective tissue disease and OA. Exclusion Criteria: * Known allergies to local anesthetics * Family history of bleeding, history of increased bleeding tendency or prolonged bleeding, current treatment with oral anticoagulants or platelet aggregation inhibitors; Quick \< 65%, international normalised ratio (INR) ≥ 1.3, thrombocyte count \< 100'000/μl, activated partial thromboplastin time (aPTT) \> 37 sec * Inability or insufficient knowledge of project language to understand the information given in the informed consent form