Table 1 Demographics and comorbidities of 574,848 patients undergoing cementless and cemented total knee arthroplasty

Total

574,848

546,731

95%

28,117

5%

-

Average Age (Years)

-

66.86

SD (9.4)

64.76

SD (9.4)

 < 0.001

Sex

-

-

-

-

-

 < 0.001

 Women

359,403

343,550

63%

15,853

57%

-

 Men

215,443

203,180

38%

12,263

44%

-

Average CCI

N/A

2.1

SD (2.3)

1.97

SD (2.3)

 < 0.001

Osteoporosis

35,991

34,665

7%

1,326

5%

 < 0.001

Osteoporosis treatment

48,255

46,433

9%

1,822

7%

 < 0.001

Prior Fragility Fracture

9,975

9,490

2%

485

2%

0.911

Diabetes Mellitus

37,386

35,578

7%

1,808

7%

0.609

Tobacco Use

15,777

14,890

3%

887

4%

 < 0.001

Underweight (Body Mass Index < 18.5)

7,260

6,907

2%

353

2%

0.930

Rheumatoid Arthritis

50,055

47,781

9%

2,274

9%

 < 0.001

Dementia

24,488

23,648

5%

840

3%

 < 0.001

Chronic Kidney Disease

6,852

6,622

2%

230

0.8%

 < 0.001

Insurance Type

-

-

-

-

-

 < 0.001

 Cash

1,101

984

0.2%

117

0.4%

-

 Commercial

352,115

333,761

61%

18,354

66%

-

 Government

7,252

6,817

2%

435

2%

-

 Medicaid

21,007

19,714

4%

1,293

5%

-

 Medicare

191,738

183,940

34%

7,798

28%

-

 Unknown

1,635

1,515

0.3%

120

0.4%

Region

-

-

-

-

-

 < 0.001

 Midwest

163,699

157,135

29%

6,564

24%

-

 Northeast

120,705

113,317

21%

7,388

27%

-

 South

199,074

188,496

35%

10,578

38%

-

 West

88,662

85,347

16%

3,315

12%

-

 Unknown

2,708

2,436

0.4%

272

1%

-