Skip to main content

Table 2 Comparison of fracture types and fracture classifications between initial and subsequent (contralateral) fracture groups

From: Characteristics of subsequent contralateral proximal femoral fracture: more convenient access is needed to treat osteoporosis

 

Initial fracture

Contralateral hip fracture

P value

Fracture type

  

0.135

 Femoral neck

90 (49.7%)

71 (39.2%)

 

 Intertrochanteric

91 (50.3%)

107 (59.1%)

 

 Subtrochanteric

0 (0%)

3 (1.7%)

 

Fracture classification

 Femoral neck

90 (100.0%)

71 (100.0%)

0.893

  Stable patterns

27 (30.0%)

22 (31.0%)

 

   B1.1

11 (12.2%)

10 (14.1%)

 

   B1.2

2 (2.2%)

3 (4.2%)

 

   B2.1

3 (3.3%)

1 (1.4%)

 

   B3

11 (12.2%)

8 (11.3%)

 

  Unstable patterns

63 (70.0%)

49 (69.0%)

 

   B1.3

55 (61.1%)

46 (64.8%)

 

   B2.2

5 (5.6%)

3 (4.2%)

 

   B2.3

3 (3.3%)

0 (0%)

 

Intertrochanteric

91 (100.0%)

107 (100%)

0.347

  Stable patterns

77 (84.6%)

85 (79.4%)

 

   A1.2

19 (20.9%)

22 (20.6%)

 

   A1.3

58 (63.7%)

63 (58.9%)

 

  Unstable patterns

14 (15.4%)

22 (20.6%)

 

   A1.1

0

1 (0.9%)

 

   A2.2

3 (3.3%)

8 (7.5%)

 

   A2.3

5 (5.5%)

6 (5.6%)

 

   A3.1

2 (2.2%)

2 (1.9%)

 

   A3.2

1 (1.1%)

1 (0.9%)

 

   A3.3

3 (3.3%)

4 (3.7%)

 
  1. Femoral neck and intertrochanteric fractures were classified by the 2018 AO classification. B1.1, B1.2, B2.1, and B3 represent the stable patterns of femoral neck fractures. A.1.2 and A1.3 represent the stable patterns of intertrochanteric fractures. Subtrochanteric fractures were present in only three patients at the second fracture, and the stability of these fractures is not discussed