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

Table 3 Study group demographic details for individual hips

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

Differences in acetabular normalization time for groups of infant hip instability with stress and seated at rest with or without acetabular dysplasia on sonography.
*p <0.001; all infants had hip instability under stress and seated at rest with or without acetabular dysplasia on sonography.

ISSN: 1471-2474