Preoperative characteristics

Group I

Group II

Total

P value

Number of cases

20

22

42

NA^a

Abscess (%)

100

0

47.6

NA

Average ages (years)

48.3 ± 15.4

53.2 ± 14.1

50.9 ± 14.8

0.29*

Male proportion, n (%)

17/20 (85)

19/22 (86.4)

36/42 (85.7)

0.59**

Average CRP^b on admission (mg/dl)

69.8 ± 35.7

19.7 ± 9.8

43.6 ± 35.8

<0.01*

Average CRP just before THR (mg/dl)

9.9 ± 4.8

8.7 ± 4.9

9.2 ± 4.8

0.44*

TB^c infection syndromeon admission, n (%)

17/20 (85)

10/22 (45.5)

27/42 (64.3)

<0.01**

TB^c Infection syndrome² just before THR^d, n (%)

4/20 (20)

5/22 (22.8)

9/42 (21.4)

0.83**

Acetabular infection n (%)

2/20 (10)

6/22 (27.3)

8/42 (19.1)

0.08**

Trans-trochanter Infection, n (%)

1/20 (5)

4/22 (18.2)

5/42 (11.9)

0.2**

Average preoperation HHS^e (scores)

31 ± 7.4

31 ± 5.9

31 ± 6.6

0.98**

Femur neck fracture, n (%)

1/20 (5)

1/22 (4.6)

2/42 (4.8)

NA

Protrusion, n (%)

2/20 (10)

1/22 (4.6)

3/42 (7.1)

NA

THR timing^f (weeks)

6.8 ± 5.6

2.7 ± 0.8

4.6 ± 4.4

<0.01*

Drug-resistance (n)

2 (1R^g, 1H^h)

0

2

NA