Table 1 Clinical characteristics of all recruited patients. Values are mean (range) or number

Age, y

46.8 (19–79)

46.4 (18–74)

0.513

Sex

0.841

 male

89

58

 female

18

13

Height, m

1.55 (1.40–1.78)

1.56 (1.40–1.75)

0.178

Weight, kg

55.3 (37–78)

55.4 (37–70)

0.839

BMI, kg/m²

23.1 (17.0–31.0)

22.8 (15.4–28.7)

0.641

ASA classification

0.884

 I

36

26

 II

49

30

 III

22

15

Tobacco use

14

16

0.107

Crowe classification

0.317

 III

16

15

 IV

91

56

HHS

43.9 (26–61)

41.3 (20–65)

0.075

ROM, °

117.0 (15–225)

122.9 (30–220)

0.577

LLD, mm

28.4 (0–60.0)

17.1 (0–51.0)

< 0.001 ^a

FO, mm

36.1 (20.0–50.0)

35.7 (21.0–48.0)

0.527

COR height, mm

60.3 (28.0-107.0)

44.9 (14.0–81.0)

< 0.001 ^a

Preoperative Hb, g/L

132.9 (93.0-176.0)

130.9 (85.0-164.0)

0.586

Preoperative HCT, L/L

0.40 (0.29–0.54)

0.40 (0.27–0.48)

0.636

Preoperative PLT, 10^9/L

183.2 (86.0-437.0)

189.7 (69.0-362.0)

0.511

Preoperative APTT, seconds

27.3 (16.0-35.3)

28.3 (20.2–40.5)

0.056

Preoperative PT, seconds

11.2 (9.8–12.8)

11.3 (9.4–13.6)

0.374

Length of SSO, mm

33.4 (1.0–60.0)

24.2 (5.0–50.0)

< 0.001 ^a

Intraoperative periprosthetic femoral fracture

11

6

0.798

Drainage use

35

26

0.630

Duration of operation, min

139.2 (95–180)

132.9 (97–190)

0.171

Reinfused blood, ml

246.1 (150–700)

-

Allogeneic RBC transfused

18

22

0.029 ^a

Allogeneic RBC transfused, units

2.7 (1.0–4.0)

2.5 (1.5-4.0)

0.368

Plasma transfused

5

7

0.225

Plasma transfused, ml

320.0 (200–600)

314.3 (200–800)

0.771