Table 4 Demographic information of patients undergoing CR with internal fixation.

From: Association between ossific nucleus volume changes and postoperative avascular necrosis risk in children with developmental dysplasia of the hip

 

Mean ± standard deviation

Initial age (months)

10.97 ± 3.55

Gender (male/female)

8/84

Affected side (left/right)

49/43

IHDI grade (1/2/3/4)

0/62/12/18

Ossific nucleus volume on the affected side (mm3)

40.95 ± 47.16

Ossific nucleus volume on the contralateral side (mm3)

245.91 ± 213.74

Ratio of ossific nucleus volume (affected/contralateral)

0.13 ± 0.11

Occurrence of AVN (yes/no)

15/77

  1. IHDI international hip dysplasia institute, AVN avascular necrosis, CR closed reduction.
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