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Table 1 General characteristic of the included studies

From: Direct anterior versus posterolateral approaches for clinical outcomes after total hip arthroplasty: a systematic review and meta-analysis

Author/year

Country

DAA/PLA

Study

Follow-up

Outcomes

Mean age (years)

No. of patients (n)

Female

BMI

Hu [24]

China

58.2/59.3

110/98

68/58

25.8/25.6

Prospective

NC

5, 7, 10, 13, 14

Siljander [31]

USA

65/64

1846/3162

1002/1799

27.4/30.2

Retrospective

3

1, 4, 5, 6, 7, 10, 12

Wu [32]

China

49.67/48.21

24/23

9/10

22.16/23.32

Retrospective

15

1, 2, 3, 4, 13, 14, 15

Barrett [20]

USA

NC

43/44

NC

NC

RCT

60

15, 17

Daas [33]

Netherlands

74.8/72.1

41/26

33/22

27.6/28.1

Retrospective

12

17

Fleischman [34]

USA

62.7/66.6

5465/2160

2815/1164

28.4/28.8

Retrospective

24

5, 7

Godoy-Monzon [25]

Argentina

56.1/57.2

40/40

17/15

NC

Prospective

17.6

1,4,9,15

Triantafyllopoulos [35]

USA

62.3/64.2

1182/18853

626/10126

NC

Retrospective

50

3

Lee [36]

Korea

65.4/68.4

12/13

NC

NC

Retrospective

1.5

1, 2, 9

Rykov [21]

Netherlands

62.8/60.2

23/23

15/12

29/29.3

RCT

1.5

1, 2, 3, 15, 17

Zhao [22]

China

64.88/62.18

60/60

36/34

24.35/25.58

RCT

6

1, 2, 3, 4, 5, 13, 14, 15, 16

Fransen [37]

Netherlands

64.2/62.6

45/38

30/24

25/27.6

Retrospective

12

1, 2, 3, 14

Jelsma [26]

Netherlands

66.7/67.9

87/32

48/16

26.6/28

Prospective

6

3, 5, 6, 7, 8, 10, 11, 16, 17

Langlois [27]

France

86/85

38/44

32/19

21/23

Prospective

1.5

1, 3, 7, 9

Amlie [38]

Norway

67/66

421/421

291/268

NC

Prospective

36

7, 12

Barrett [23]

USA

61.4/63.2

43/44

14/25

30.7/29.1

RCT

12

1,2,4,5,7,8,13,14,15,16,17

Nam [39]

USA

66.76/66.86

110/110

71/65

28.3/27.4

Retrospective

6

13, 14

Spaans [40]

Netherlands

69/68

46/46

22/32

25/29

Retrospective

12

1, 2, 3, 5, 7, 9, 11, 14

  1. NC not clear
  2. 1. operative time; 2. intraoperative blood loss; 3. length of hospital stay; 4. incision length; 5. fracture; 6. infection; 7. dislocation; 8. hematoma; 9. LLD (leg-length difference); 10. PE/DVT (pulmonary embolism/deep vein thrombosis); 11. pneumonia; 12. re-operation; 13. anteversion angle. 14. abduction angle; 15. HHS (Harris hip score); 16. VAS (visual analog scale); 17. HOOS (hip disability and osteoarthritis outcome)