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Table 4 Canal flare indices for DDH and control groups

From: Three-dimensional morphological study of the proximal femur in Crowe type IV developmental dysplasia of the hip

 

DDH (n = 51)

p

Normal (n = 30)

IVa (n = 25)

IVb (n = 26)

ML-CFI

3.02 ± 0.53##

3.99 ± 0.71#

0.000**

4.39 ± 0.40

AP-CFI

2.47 ± 0.54

2.74 ± 0.65

0.079

2.70 ± 0.40

D+20/Di

2.61 ± 0.43#

2.53 ± 0.47##

0.500

2.89 ± 0.41

ML-MCFI

2.68 ± 0.56

2.86 ± 0.55

0.599

2.65 ± 0.31

AP-MCFI

1.96 ± 0.45

1.96 ± 0.33

0.999

1.86 ± 0.27

D+20/D−20

2.10 ± 0.42#

1.83 ± 0.28

0.014*

1.82 ± 0.43

ML-DCFI

1.14 ± 0.13##

1.42 ± 0.22##

0.000**

1.68 ± 0.21

AP-DCFI

1.27 ± 0.18##

1.39 ± 0.18

0.037*

1.47 ± 0.23

D−20/Di

1.26 ± 0.16##

1.42 ± 0.20##

0.005**

1.70 ± 0.21

  1. Values are presented as the mean and the standard deviation; p means the differences between type IVa and type IVb DDH; *p < 0.05, **p < 0.01 for the comparison between the DDH groups; #p < 0.05, ##p < 0.01, when compared with control group
  2. CFI canal flare index, MCFI metaphyseal canal flare index, DCFI diaphyseal canal flare index