In the advanced stages of arthritis not treatable by medicines or conservative therapies, Total knee replacement is a well-established surgical method of treatment . However, it is associated with a small proportion of treatment failure and unsatisfactory outcomes. In addition to these problems, hypersensitivity reactions against metallic components of TKR implants have recently emerged as a potential cause of concern post TKR.
But, the overall prevalence of allergies to implant materials is still very rare and not frequently reported. Still, ceramic composite implants have recently been tested as TKR implant materials and have demonstrated excellent outcomes at long-term along with minimum wear, owing to their high resistance to scratching and better ability to get moistened (wettability) as compared to Co-Cr alloys. Also, the bodily response to the debris resulting from these components is also less aggressive in nature.
Various tests have shown positive results of TKR with ceramic implants which are beneficial to the patients. A Zirconium alloy has recently been tested in a novel ceramic knee prosthesis. It is expected that this new prosthesis will be able to work for 20 to 25 years, which is many times greater than the effectiveness of Co-Cr implants. However, your TKR surgeon will recommend the implant best suited for you depending on your condition and his/her experience with a particular implant.
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