 During last 6 years approximately 10.000 ceramic balls and 5.000 ceramic liners have been implanted in the region Emilia-Romagna in Italy 4 million Every single year approximately 60.000 hip prostheses are implanted in Italy. Quality of life of patients after surgery is very good, as widely demonstrated in the literature. On the basis of data produced by the only complete hip register in Italy that is run in our Lab RIPO, Register of Orthopedic Implants in the Region Emilia-Romagna survival rate of primary total hip prosthesis is 95.6 at 9 years. Reasons for revision are mainly aseptic loosening of one or both components 40 of the total and dislocation 26, being the latter much more frequent in the first two years. Less frequently revision is due to sepsis 7 of the total,bone fracture 11, prosthesis fracture 3 or pain 3. Revision is relates, among the others, to prosthesis-related factors, such as fixation to bone and articular coupling. In our experience, during the last ten years 32 of implants had both articular component in ceramic , 34 had metal head and plastic liner, 24 ceramic head and plastic liner, 10 both components in metal. 