No Allergies

Ceramics are Bioinert and do not cause Allergic Responses

In addition to their very high wear resistance, ceramics have another advantage: they are bioinert. They undergo no chemical reactions in the human body on account of their strong chemical bonding and their high purity. And BIOLOX® ceramics do not release metal ions.

This is why ceramic is characterized by its superior tissue compatibility and does not cause allergic reactions. More than more than 40 years of clinical experience and a great deal of research have demonstrated their superior biocompatibility. This is why ceramic/ceramic wear couples are recommended in medical literature.

The possibility of allergic responses and health risks as a result of metal wear cannot be ruled out

An ever increasing number of publications report on allergic reactions to the constituents of the metal alloys used in both hip and knee replacements. Metallic elements such as nickel, chromium and cobalt are well-known contact allergens, which can cause many unwanted reactions in the human body. Medical literature contains innumerable articles which report on the immune response and hypersensitivity reactions to metals and their effect on the life expectancy of implants. Allergic reactions to the metallic constituents of metal alloys are cited as possible causes for osteolysis, early implant loosening and postoperative complications such as delayed wound healing, delayed bone healing and eczema. Consequently, allergic reactions to metal implants can lead to the joint replacement having to be removed and replaced.

Medical literature does not recommend the use of a metal/metal wear couple for patients with metal sensitivity and chronic kidney disease. There is uncertainty over the possible effects caused by the long term exposure of the human body to small metallic wear particles and metal ions. Specialists are still not certain whether released metal ions have a tumor-causing effect. However, some publications have raised the suspicion that a weakening of the body’s own resistance to infection is one possible effect of this disturbance to the immunological system.

These conclusions are based on scientific articles and medical publications.

Minimal wear suggests that a longer Implant life is a real possibility

In a ceramic/ceramic wear couple, in which both the ball head and the cup insert are made of ceramic, the wear rate and consequently the risk of early implant loosening is the lowest of all available material combinations. Investigations show that the wear is less than 0.005 mm per year, up to 100 times less than with a metal/polyethylene wear couple. Laboratory studies using hip simulators even report wear values less than 0.001 mm per year. This represents a wear rate roughly 200 times less than that obtained with metal/polyethylene. The wear behavior is practically independent of the size of the ceramic ball head used.

Specially suited for younger and more active Patients

A ceramic wear couple is particularly beneficial for younger and more active patients, whose higher activity level places higher demands on the materials used. For such patients a wear couple containing polyethylene would increase the risk of osteolysis and could lead to early implant loosening.