Knee replacements rise sharply in people on Medicare.
D000368:Aged; D019645:Arthroplasty, Replacement, Knee / Q000191:economics / Q000706:statistics & numerical data*; D005260:Female; D006801:Humans; D007902:Length of Stay / Q000706:statistics & numerical data; D008297:Male; D006278:Medicare / Q000191:economics / Q000706:statistics & numerical data*; D008875:Middle Aged; D010359:Patient Readmission / Q000706:statistics & numerical data; D011183:Postoperative Complications / Q000191:economics / Q000453:epidemiology*; D012086:Reoperation / Q000706:statistics & numerical data; D014481:United States