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Table 3 Study group demographic details for individual hips

From: Natural history of hip instability in infants (without subluxation or dislocation): a three year follow-up

Hip variable Group I (normalized at 7 months of age) n =17 Group II (normalized after 7 months of age) n =31
  number % number %
Sex   
Girls 12 25.0 27 56.3
Boys 5 10.4 4 6.3
Torticolis   
No 14 29.2 25 52.0
present 3 6.3 6 12.5
Birth position   
Normal 7 14.6 11 22.9
Breech 7 14.6 20* 41.7
Transverse 1 2.1 0 0.0
No data 2 4.1 0 0.0
Type of delivery     
Physiological 5 10.4 5 10.4
C-section 7 14.6 25* 52.1
No data 5 10.4 1 2.1
  1. Differences in acetabular normalization time for groups of infant hip instability with stress and seated at rest with or without acetabular dysplasia on sonography.
  2. *p <0.001; all infants had hip instability under stress and seated at rest with or without acetabular dysplasia on sonography.