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Table 3 Comparison of primary outcomes in different groups

From: Multiple cannulated screw fixation of femoral neck fractures with comminution in young- and middle-aged patients

Variables

With comminution (n = 212)

Without comminution (n = 172)

P value

Anterior comminution (n = 14)

Posterior comminution (n = 88)

Superior comminution (n = 16)

Inferior comminution (n = 60)

Multiple comminution (n = 34)

Nonunion (%)

16 (7.5)

3 (1.7)

0.009

1 (7.1)

6 (6.8)

0 (0.0)

4 (6.7)

5 (14.7)*

ONFH (%)

24 (11.3)

5 (2.9)

0.002

0 (0.0)

10 (11.3)

0 (0.0)

5 (8.3)

9 (26.4)*

Shortening (%)

46 (21.6)

23 (13.4)

0.044

2 (14.2)

18 (20.4)

2 (12.5)

10 (16.6)

14 (41.2)*

IF failure (%)

19 (11.8)

5 (2.9)

0.020

0 (0.0)

6 (6.8)

1 (6.2)

4 (6.6)

8 (23.5)*

  1. ONFH, Osteonecrosis of the femoral head; IF, internal fixation
  2. *Difference versus other groups with comminution (P < 0.05)