Hello, I am a consultant orthopaedic surgeon. As I have noticed that there are several open questions on how to treat certain conditions, I have set up several clinical trials in order to achieve the best outcome for my patients. As a hip and knee surgeon, I started with several multicenter randomized controlled trials evaluating different rehab interventions after total hip or knee replacement surgery (arthroplasty). Later on, I became involved in setting up the German Arthroplasty Registry, since its application phase. As I developed a special interest in research methods, I ran across several methodological problems of randomized controlled trials that were published in the most highly-ranked medical journals. After I have entered paediatric orthopaedics and traumatology, I noted a considerable lack of research in that field. Therefore, I have set up the Bernese Paediatric Fracture Project.