Table 2 Demographic characteristics of the enrolled patients

Age

67.48 ± 8.00

66.29 ± 6.33

NS

Sex

P < 0.05

Male

25

23

Female

25

77

BMI

27.32 ± 3.61

27.90 ± 3.93

NS

Affected joint

Left Knee

24

46

NS

Right Knee

26

54

NS

Comorbidities

Hypertension

32

61

NS

Diabetes mellitus

13

15

NS

Cardiovascular disease

9

15

NS

Cerebrovascular disease

5

2

NS

Preoperative bacterial culture

positive

32

negative

18

CRP (mg/L)

61.84 ± 43.04 mg/L

7.39 ± 9.10 mg/L

P < 0.05

SOD (U/ml)

135.95 ± 24.47 U/ml

173.83 ± 13.9 U/ml

P < 0.05

WBC (10⁹/L)

8.82 ± 4.46

6.06 ± 1.51

P < 0.05

NEUT (%)

71.02 ± 11.76

62.93 ± 6.65

P < 0.05

PLT (10⁹/L)

297.58 ± 99.51

294.39 ± 246.08

P = 0.206

MPV(FL)

9.73 ± 0.93

10.38 ± 0.74

P < 0.05

PC/MPV

31.30 ± 11.53

28.74 ± 24.44

P < 0.05