Skip to main content

Table 2 Patient and fracture characteristics by occurrence of complications

From: Analysis of risk factors for complications after femoral neck fracture in pediatric patients

Characteristicsn (%)* or mean ± SD (range)
AVN (n = 14)No. AVN (n = 30)pCox vara (n = 4)No. vara (n = 40)pNonunion (n = 2)pPreclosure (n = 7)p
Sex  1.000  1.000 1.000 1.000
 Female5 (36)12 (40) 1 (25)16 (40) 1 (50) 3 (43) 
 Male9 (64)18 (60) 3 (75)24 (60) 1 (50) 4 (57) 
Age9.57 ± 3.16 (5–14)8.73 ± 3.92 (2–14)0.4548.50 ± 3.70 (5–13)9.05 ± 3.72 (2–14)0.79211.5 ± 2.12 (10–13)0.3039.43 ± 2.99 (6–13)0.701
Injury mechanism  0.817  1.000 1.000 0.613
 Sports-related injury8 (57)18 (60) 2 (50)24 (60) 2 (100) 3 (43) 
 Fall from height4 (29)6 (20) 1 (25)9 (23) 0 (0) 2 (29) 
 Car accident2 (14)6 (20) 1 (25)7 (18) 0 (0) 2 (29) 
Delbet type  0.019  0.662 1.000 0.335
 I1 (7)0 (0) 0 (0)1 (3) 0 (0) 0 (0) 
 II11 (79)14 (47) 3 (75)22 (55) 1 (50) 6 (86) 
 III2 (14)16 (53) 1 (25)17 (43) 1 (50) 1 (14) 
Displaced fracture13 (93)24 (80)0.4014 (100)33 (83)1.0002 (100)1.0006 (86)1.000
Combined injury3 (21)9 (26)1.0002 (50)8 (20)0.2180 (0)1.0002 (29)0.649
Surgical reduction within 24 h after injury1 (7)6 (20)0.4010 (0)7 (18)1.0000 (0)1.0000 (0)0.575
Type of reduction  1.000  0.302 1.000 0.654
 Close reduction4 (29)9 (30) 0 (0)13 (33) 0 (0) 1 (14) 
 Open reduction with capsular decompression10 (71)21 (70) 4 (100)27 (68) 2 (100) 6 (86) 
Fixation  1.000  1.000 0.508 1.000
 Lag screws10 (71)21 (70) 3 (75)28 (70) 1 (50) 5 (71) 
 Plate and screws4 (29)9 (30) 1 (25)12 (30) 1 (50) 2 (29) 
Pass epiphysis5 (36)2 (7)0.0251 (25)6 (15)0.5130 (0)1.0003 (43)0.068
Good Reduction quality13 (93)27 (90)1.0002 (50)38 (95)0.0361 (50)0.1757 (100)1.000
  1. Bold values are statistically significant p < 0.05
  2. *Patient number with the percentage of patient number in total patient of the column within parentheses