[Hip prosthesis: idea, indications, development].

The authors describe the evolution and the successive stages that were necessary until the present total substitution of the hip joint could be worked out. The earliest attempts were made in 1923, but only in 1953, professor Marino Zuco, of Rome University Orthopedic Department started to carry out operations of arthroplasty, after 3 years of experimental research. In 1960, Charnley introduced the use of cement (methyl methacrylate), thus initiating the practice of total hip substitution. This surgery is indicated in a variety of joint pathologies of which osteoarthritis is the most frequent one. The implant of a cemented or non cemented prosthesis is conditioned both by the patient's age and by bone structure. Differences between the two types of prostheses are illustrated as well as the causes of failure or subsequent pathology and their diagnosis.