Table 8 All patients who underwent UKA and TKA during the study period

Age

 64 and under

1,709

8%

11,183

10%

 65–69

6,319

31%

30,628

28%

 70–74

5,518

27%

29,247

26%

 75–79

4,005

19%

24,685

22%

 80–84

2,250

11%

14,539

13%

 85 and older

959

5%

5,534

5%

 Unknown

147

1%

1,681

2%

Region

 Midwest

4,502

22%

30,816

28%

 Northeast

2,736

13%

17,703

16%

 South

10,627

52%

43,475

39%

 West

2,732

13%

18,777

17%

 Unknown

0

0%

27

0%

Gender

 Female

10,543

51%

71,394

65%

 Male

9,933

48%

38,214

35%

 Unknown/Other

147

1%

1,681

2%