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Table 5 Vancouver classification including B2 fracture pattern according to stem geometry (number and percentage within group)

From: Periprosthetic proximal femoral fractures in cemented and uncemented stems according to Vancouver classification: observation of a new fracture pattern

 

Cemented, N = 84

Uncemented, N = 88

Fracture pattern

Composite beam, N = 10

Tapered, N = 74

Wedge, N = 27

Straight, N = 61

A

1 (10%)

11 (14.9%)

4 (14.8%)

14 (23%)

B1

2 (20%)

13 (17.6%)

3 (11.1%)

8 (13.1%)

B2—burst

1 (10%)

17 (23%)

2 (7.4%)

0 (0%)

B2—clamshell

0 (0%)

1 (1.4%)

10 (37%)

20 (32.8%)

B2—reverse clamshell

0 (0%)

7 (9.5%)

5 (18.5%)

7 (11.5%)

B2—spiral

4 (40%)

14 (18.9%)

3 (11.1%)

4 (6.6%)

B3

1 (10%)

3 (4.1%)

0 (0%)

0 (0%)

C

1 (10%)

8 (10.8%)

0 (0%)

8 (13.1%)