Skip to main content

Table 2 Details of outcome measurements of the trials

From: A systematic review of undisplaced femoral neck fracture treatments for patients over 65 years of age, with a focus on union rates and avascular necrosis

Study

Treatment

Union

Secondary displacement

Non-union

Fixation failure

Avascular necrosis

Bed rest-related complications

1 year mortality

Re-operation

Reduction in mobility status

Local pain

Comparison studies

 Bentley [1]

Conservation

83.7%(36/43)

16.3%(7/43)

2.3%(1/43)

NR

14.0%(6/43)

NR

NR

14%(5/43)

NR

NR

Petersen nailing, Moore pins

95.7%(22/23)

0(0/23)

4.3%(1/23)

4.3%(1/23)

17.4%(4/23)

NR

NR

0(0/23)

NR

NR

 Cserhati [2]

Conservation

NR

19.7%(24/122)

0.8%(1/122)

NR

12.8%(5/39)

18.9%(23/122)

13.9%(17/122)

18%(22/122)

25.6%(10/39)

51.3%(20/39)

Petersen nail, three screws + key-hole plage

NR

0.8%(1/125)

0(0/125)

0.8%(1/125)

16.1%(10/62)

3.2%(4/125)

10.4%(13/125)

NR

45.2(28/62)

61.3%(38/62)

Conservative treatment studies

 Jensen [3]

Conservation

72.7%(93/128)

27.3%(35/128)

NR

NR

NR

NR

NR

NR

NR

NR

 Ma [4]

Conservation

58.3%(67/115)

41.7%(48/115)

NR

NR

NR

3.5%(4/115)

3.5%(4/115)

41.7%(48/115)

NR

NR

 Raaymakers [5]

Conservation

69%(216/311)

31%(95/311)

NR

NR

11.3%(18/160)

NR

19.1%(61/319)

10.6%(33/311)

NR

NR

 Raaymakers [6]

Conservation

85.9%(146/170)

14.1%(24/170)

NR

NR

11.1%(9/81)

NR

16.5%(28/170)

NR

NR

NR

 Verheyen [7]

Conservation

54.3%(57/105)

45.7%(48/105)

NR

NR

NR

NR

NR

45.7%(48/105)

NR

NR

 Buorda [8]

Conservation

NR

33.3%(19/57)

NR

NR

1.8%(1/57)

NR

29.8%(17/57)

NR

NR

NR

 Taha [9]

Conservation

44.3%(27/61)

55.7%(34/61)

NR

NR

NR

NR

4.9%(3/61)

NR

NR

NR

Operative treatment studies

 Kim [10]

Three cannulated screws

NR

0(0/58)

0(0/58)

1.9%(1/54)

7.4%(4/54)

NR

6.9%(4/58)

7.4%(4/54)

35.2%(19/54)

NR

 Manohara [11]

Cancellous screws

NR

0(0/100)

0(0/100)

3%(3/100)

5%(5/100)

7%(7/100)

18%(18/100)

8%(8/100)

44.1%(30/68)

22.1%(15/68)

 Han [12]

Multiple screws, pins, or dynamic hip screw

NR

0(0/52)

15.4%(8/52)

NR

11.5%(6/52)

1.9%(1/52)

3.8%(2/52)

30.8%(16/52)

NR

NR

 Phillips [13]

Watson-Jones nail

94.4%(68/72)

0(0/72)

5.6%(4/72)

5.6%(4/72)

22.5%(9/40)

NR

29.2%(21/72)

9.7%(7/72)

NR

NR

 Lapidus [14]

Olmed screws

NR

0(0/382)

6.5%(25/382)

NR

5.2%(20/382)

4.5%(17/382)

21.5%(82/382)

11.8%(45/382)

NR

5%(19/382)

 Rogmark [15]

Hansson hook pins

NR

0(0/224)

4.5%(10/224)

7.1%(16/224)

5.4%(12/224)

11.2%(25/224)

11.2%(25/224)

15.2%(34/224)

70.6%(72/102)

36.4%(36/99)

 Chen [16]

Cancellous screws

94.6% (35/37)

5.4% (2/37)

0(0/37)

NR

10.8% (4/37)

NR

NR

16.2%(6/37)

NR

51.4(19/37)

 Chiu [17]

Knowles pins

93.4%(285/305)

0(0/305)

5.6%(17/305)

3.0%(9/305)

7.2%(22/305)

NR

13.7%(50/366)

12.8%(39/305)

NR

7.2%(22/305)

 Makki [18]

Dynamic hip screw

96.8%(30/31)

NR

3.2%(1/31)

NR

3.2%(1/31)

NR

9.7%(3/31)

0(0/31)

NR

NR

Dynamic hip screw with anti-rotation screw

88.2%(30/34)

NR

11.8%(4/34)

NR

8.8%(3/34)

NR

2.9%(1/34)

2.9%(1/34)

NR

NR

 Parker [19]

Screw fixation

NR

0(0/346)

11%(38/346)

NR

NR

1.7%(6/346)

18.8%(65/346)

14.5%(50/346)

33.2%(115/346)

NR

Hemiarthroplasty

NR

0.58%(2/346)

3.8%(13/346)

NR

NR

6.9%(24/346)

25.7%(89/346)

5.5%(19/346)

19.1%(66/346)

NR

 Stromqvist [20]

Hook pin fixation

NR

NR

1.6%(1/64)

NR

3.1%(2/64)

NR

24.7%(21/85)

NR

NR

NR

 Parker [21]

Three cannulated screws

NR

NR

8.5%(48/565)

NR

NR

NR

NR

NR

NR

NR

 Parker [22]

Internal fixation

NR

NR

2.7%(3/112)

NR

4.5%(5/112)

NR

NR

4.5%(5/112)

NR

NR

 Yih [23]

Minimally invasive dynamic hip screw

100%(33/33)

NR

0(0/33)

0(0/33)

12.1%(4/33)

NR

9.1%(3/33)

3%(1/33)

NR

NR

Dynamic hip screw

100%(25/25)

NR

0(0/25)

0(0/25)

12%(3/25)

NR

8%(2/25)

4%(1/25)

NR

NR

Multiple cannulated screws

96.9%(31/32)

NR

3.1%(1/32)

9.4%(3/32)

21.9%(7/32)

NR

9.4%(3/32)

15.6%(5/32)

NR

NR

 Hui [24]

Over 80 years internal fixation

NR

26.7%(4/15)

NR

6.7%(1/15)

26.7%(4/15)

NR

17.2%(5/29)

53.3%(8/15)

NR

6.7%(1/15)

65 to 79 years internal fixation

NR

6.3%(1/16)

NR

0(0/16)

0(0/16)

NR

25%(7/28)

12.5%(2/16)

NR

12.5%(2/16)

Over 80 years hemiarthroplasty

NR

8.7%(2/23)

NR

0(0/23)

0(0/23)

NR

33.3%(19/57)

13%(3/23)

4.3%(1/23)

4.3%(1/23)

 Bjorgul [25]

Cannulated screws

NR

1.8%(4/225)

7.1%(16/225)

1.3%(3/225)

4.4%(10/225)

NR

14.7%(33/225)

18.7%(42/225)

36.9%(83/225)

2.7%(6/225)

 Watson [26]

Dynamic hip screw

NR

NR

NR

NR

3.2%(1/31)

9.7%(3/31)

19.4%(6/31)

3.2%(1/31)

32.3%(10/31)

32.3%(10/31)

Cancellous screws.

NR

NR

NR

NR

0(0/29)

6.9%(2/29)

20.7%(6/29)

10.3%(3/29)

31%(9/29)

20.7%(6/29)

 Lee [27]

Dynamic hip screws

84.8%(39/46)

NR

0(0/46)

0(0/46)

8.7%(4/46)

NR

6.5%(3/46)

2.2%(1/46)

NR

NR

Multiple cannulated screws

77%(37/48)

NR

4.2%(2/48)

6.3%(3/48)

8.3%(4/48)

NR

4.2%(2/48)

14.6%(7/48)

NR

NR

 Conn [28]

Three parallel 6.5-mm AO

NR

NR

6.4%(24/375)

NR

4%(15/375)

3.7%(14/375)

20.5%(77/375)

5.1%(19/375)

NR

NR

 Sikand [29]

Conservation

NR

NR

NR

NR

NR

NR

50%(4/8)

NR

NR

NR

Hemiarthroplasty

NR

NR

NR

NR

NR

6.9%(2/29)

37.9%(11/29)

3.4%(1/29)

37.9%(11/29)

NR

Internal fixation

NR

NR

NR

NR

NR

0.9%(1/110)

15.5%(17/110)

7.3%(8/110)

39.1%(43/110)

NR

  1. NR not record
  2. Bed rest-related complications: deep venous thrombosis, pneumonia, and urinary infection