Table 1 Characteristics of selected trials

Johansson [18]

2 Screws

THA

50/50

84/84

34/40

Two parallel and percutaneously inserted screws/Dorsolateral approach

180

NR

Iftikhar [19]

2 Screws

THA

50/50

65.16/65.04

26/34

Two cannulated screws/Posterolateral approach

18

NR

Chammout [20]

2 Screws

THA

57/43

79/78

41/38

Two cannulated screws/Posterolateral approach

204

23

Tidermark [21]

2 Screws

THA

53/49

81.4/79.2

42/40

two cannulated screws/Modified Hardinge approach THR

48

5

Lindström [22]

2 Screws

THA

50/50

84.0/84.2

38/40

Two parallel and percutaneously inserted screws/Dorsolateral approach

12

34

Neaiider [23]

2 Screws

THA

11/9

86/77

10/5

Two parallel Olmed screws/Posterolateral approach

18

NR

Cao [24]

MScrews

THA

128/157

76.8/75.9

69/84

Three hollow compression screws/Posterior approach

60

9

Kang [25]

MScrews

BHA

60/179

74.3/75.3

21/50

Three to four 6.5 mm cannulated screws/Posterolateral approach

36.8

NR

Kang [25]

MScrews

BHA

81/62

73.1/77.2

27/18

Three to four 6.5 mm cannulated screws/Posterolateral approach

36.8

NR

Frihagen [26]

2 Screws

BHA

112/110

83.2/82.5

84/78

Two parallel cannulated screws/Lateral approach

24

17

Dolatowski [27]

2 Screws

BHA

111/108

83.2/83.1

84/73

Two partially threaded, cancellous, cannulated screws of 8.0-mm diameter/Direct lateral approach or posterior approach

24

NR

Soreide [28]

2 Screws

BHA

51/53

77.9/78.3

38/43

Two von Bahr screws/Posterolateral modified Osborne approach

12

NR

Roden [29]

2 Screws

BHA

53/47

81/81

34/37

Bahr screws/Lateral approach

60

NR

Lu [30]

MScrews

BHA

41/37

85.85/86.24

29/29

Three 6.5 mm cannulated screws/Modified Hardinge approach

38.68

3

Vugt 1993[31]

DHS

BHA

21/22

75.3/76.0

11/14

DHS/Anterolateral approach

36

7

Keating [32]

MScrews

BHA

THA

69/69/69

74.3/75.0/75.2

51/54/52

Cannulated hip screws or a sliding hip screw/Lateral or posterior approach/Lateral or posterior approach

24

NR

Watson [33]

MScrews

DHS

23/26

76.7/77.9

24/25

Three partially threaded cannulated 6.5-mm titanium cancellous screws/Two-hole DHS

24

34

Lee [34]

MScrews

DHS

27/36

72.8/74.6

15/13

Three 6.5-mm (AO) cannulated screws/DHS

12

12

Jettoo [35]

MScrews

DHS

34 870/18 014

78/80

25,634/13343

Multiple screws/DHS

48

NR

Madsen [38]

MScrews

DHS

51/52

74/75

41/37

Multiple cannulated screws/DHS

24

0

Lagerby [39]

2 Screws

MScrews

138/130

81/80

93/86

Two Uppsala screws/Three Richards screws

12

0

Boukebous [40]

THA

BHA

98/101

78.8/83.3

70/73

Posterolateral approach

24.2

NR

Mariconda [41]

THA

BHA

60/60

75.8/78.8

49/48

Posterolateral or direct lateral approach/Direct lateral approach

12

0

Lin [42]

THA

BHA

115/96

64.1/67.9

58/52

NA

89.4

NR

Baker [43]

THA

BHA

40/41

74.2/75.83

32/32

Transgluteal lateral approach

36

NR

Kim [44]

THA

BHA

84/84

73.1/72.9

58/57

Posterolateral approach

21.9

0

Shukla [45]

THA

BHA

22/25

65.36/68.3

14/16

Standard Moore's (southern) posterior approach

24

NR

Cho [46]

THA

BHA

80/89

75.5/77.6

66/73

Modified Hardinge approach

36

NR

Sonaje [47]

THA

BHA

21/21

66.4/65.3

13/14

Lateral decubitus position approach

24

2

Blomfeldt [48]

THA

BHA

60/60

80.7/80.5

54/47

Modified Hardinge approach/Modified Hardinge approach

12

0

Cadossi [49]

THA

BHA

47/49

84.2/82.3

34/28

Straight lateral approach

36

64

Cans [50]

THA

BHA

16/22

82/77

NA

posterolateral approach/Lateral approach

25.2

8