An initial hip replacement means the first time a hip prosthesis with femoral head and femur is surgically fitted. A hip replacement is advisable, for example, in patients with severe hip arthritis or after an accident. The prosthesis is made of metal and plastic components and is firmly fixed in the bone. The indicator in the Swiss Atlas of Healthcare contains analyses on the frequency of initial hip replacements performed in inpatient care facilities in patients with degenerative diseases and in traumatology, as well as the total initial implants performed in inpatient facilities.