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Table 2 Intraoperative and postoperative patient data

From: Comparison of postoperative effectiveness of less invasive short external rotator sparing approach versus standard posterior approach for total hip arthroplasty

 

Corrective group (n = 72)

Standard group (n = 54)

P

Intraoperative

 Incision length (cm), mean ± SD

13.8 ± 0.9

13.4 ± 0.7

0.4

 Operation time (min), mean ± SD

51 ± 11.7

45 ± 10.3

< 0.001

 Intraoperative blood loss (mL), mean ± SD

278.4 ± 132.7

349.6 ± 189.1

< 0.001

 Postoperative 6-h drainage (mL), mean ± SD

290.7 ± 174.3

509.6 ± 280.7

0.03

 Number of patients requiring autologous blood transfusion, n (%)

5 (6.9)

13 (24.1)

0.03

 Location of prosthesis (°), mean ± SD

  Anteversion angle

42.6 ± 6.7

43.1 ± 6.2

0.53

  Abduction angle

20.7 ± 4.8

19.9 ± 4.2

0.48

Postoperative

 CK, mean ± SD

  1st day postoperative

559.1 ± 361.7

578.9 ± 476.1

0.71

  2nd day postoperative

436.3 ± 265.8

395.4 ± 293.7

0.21

 Myoglobin, mean ± SD

  Change at 1 day postoperatively

178.9 ± 147.3

199.5 ± 11.6

0.43

  Change at 2 days postoperatively

62.9 ± 54.2

76.3 ± 33.5

0.26

 CRP change at 3 days postoperatively, mean ± SD

79.1 ± 47.5

82.5 ± 39.6

0.63

 Time to ambulation (days), mean ± SD

3.0 ± 2.3

4.1 ± 2.2

0.04

 Distance in 6-min walking test (m), mean ± SD

29 ± 9.7

27 ± 7.9

0.68

 Time to using stairs independently (days), mean ± SD

5.5 ± 2.0

7.2 ± 2.7

0.02

 Hospital stay (days), mean ± SD

9.2 ± 3.1

10.8 ± 3.8

0.62

 Joint dislocation, n (%)

1 (1.4)

2 (3.7)

0.399

  1. CK Creatine kinase, CRP C-reactive protein