Abstract

ABSTRACTWith the advent of noncemented total joint prostheses, todays orthopedic surgeons are asking question about the predictability and performance of newer biologically fixed implants. Reported experience to date has failed to document any improved parameters of performance; instead, problems of prolonged convalescence, postoperative pain, and difficulties in revision procedures have been noted. Other issues of concern relate to the potential harmful effects of ion leaching, and problems of stress shielding and stress overload due to the physical properties of the materials presently available. Current investigative efforts to resolve these problems look promising, though surgeons should realize that science is a long way from producing the perfect total joint prosthesis.