Here are 70 statistics on total knee replacements in the United States over the 2000s, according to a 2014 Annual Incidence of Common Musculoskeletal Procedures and Treatments report from the American Academy of Orthopaedic Surgeons.
2000
• Discharges: 282,350
• Male: 37 percent
• Female: 63 percent
• 18-44 years: 2 percent
• 45-64 years: 31 percent
• 65-84 years: 63 percent
• 85+ years: 3 percent
2001
• Discharges: 314,402
• Male: 36 percent
• Female: 64 percent
• 18-44 years: 2 percent
• 45-64 years: 32 percent
• 65-84 years: 62 percent
• 85+ years: 3 percent
2002
• Discharges: 351,018
• Male: 36 percent
• Female: 64 percent
• 18-44 years: 2 percent
• 45-64 years: 35 percent
• 65-84 years: 60 percent
• 85+ years: 3 percent
2003
• Discharges: 380,775
• Male: 35 percent
• Female: 65 percent
• 18-44 years: 2 percent
• 45-64 years: 36 percent
• 65-84 years: 59 percent
• 85+ years: 3 percent
2004
• Discharges: 432,379
• Male: 35 percent
• Female: 65 percent
• 18-44 years: 2 percent
• 45-64 years: 36 percent
• 65-84 years: 58 percent
• 85+ years: 3 percent
2005
• Discharges: 498,169
• Male: 36 percent
• Female: 64 percent
• 18-44 years: 2 percent
• 45-64 years: 38 percent
• 65-84 years: 57 percent
• 85+ years: 3 percent
2006
• Discharges: 497,001
• Male: 36 percent
• Female: 64 percent
• 18-44 years: 2 percent
• 45-64 years: 39 percent
• 65-84 years: 56 percent
• 85+ years: 3 percent
2007
• Discharges: 551,259
• Male: 36 percent
• Female: 64 percent
• 18-44 years: 2 percent
• 45-64 years: 40 percent
• 65-84 years: 55 percent
• 85+ years: 3 percent
2008
• Discharges: 616,617
• Male: 37 percent
• Female: 63 percent
• 18-44 years: 2 percent
• 45-64 years: 41 percent
• 65-84 years: 54 percent
• 85+ years: 3 percent
2009
• Discharges: 621,029
• Male: 37 percent
• Female: 63 percent
• 18-44 years: 2 percent
• 45-64 years: 41 percent
• 65-84 years: 54 percent
• 85+ years: 3 percent
2010
• Discharges: 658,340
• Male: 37 percent
• Female: 63 percent
• 18-44 years: 2 percent
• 45-64 years: 42 percent
• 65-84 years: 53 percent
• 85+ years: 3 percent