IMPLANT STABILITY, HISTOLOGY, RSA AND WEAR - MORE CRITICAL QUESTIONS ARE NEEDED - A VIEW POINT

I discuss the radiostereometry (RSA) of prosthetic micromovement from clinical and histological viewpoints. Even in non-migrators there is a wide variety of interfaces with various resistances to trigger factor s, such as mechanical forces and sequels of wear. I suggest that the v arious forms of bone resorption seen with conventional radiography are caused by such trigger factors and that their anatomical appearance i s determined by the structure of the interface obtained at surgery.