Profession as nurse in university clinic of Essen for 6 Years 1972-77. Study of Medicine in Essen until 1983. Ph D. in Neurosurgery 1984.Surgeon since 1990.Senior physician since 1990.Head of department since2005. Hospital director since 2009. Specialist for arthroscopic surgery with nearly 10000 arthroscopies of the knee; more than 2500 knee arthroplasties; center of excellence for ACT of the knee with experience in more than 500 cases. Fame congress in feb. 2010 in Gelsenkirchen.A lot of activities and paticipation in studies for cartilage repair.