How long have knee replacement been done?

Knee replacements, called total knee arthroplasties are not as old as hip replacements. It appears that the first knee replacements were attempted in the 1960s were did not have a good success rate until the 1970s. Now, the rate of knee replacements performed yearly is drastically rising. There was over a 400 percent increase in TKAs done in the years 2000 to 2003 over those done in a similar length of time in the 1970s.