Artroprotesi d’anca ceramica-ceramica

Alumina (Aluminum oxide, Al2O3) has been in clinical use as an articulating material in Total Hip Replacement for more than 40 years. Ceramic bearings were introduced to reduce wear and increase long-term survivorship of total hip arthroplasty and alumina ceramic-on-ceramic bearings have gained popularity in hip arthroplasty because of their properties of low wear and chemical inertness. Advances in technology have reduced the risk of fracture of ceramic total hip arthroplasty implants; the recent introduction of the alumina matrix composite material offers an even wider range of applications because of its significantly enhanced mechanical properties when compare to alumina. In addition, rigid quality assurance and good manufacturing practices have also contributed greatly to the current reliability of modern ceramic bearings. Although concerns still remain about fracture and noise, ceramic components continue to provide an option for the young and more active patient and for a measure to compare other new alternative bearings that are currently available, with excellent implant survival rate, good function, a low implant wear rate and almost absent radiographic evidence of failure due to osteolysis.