Greater presence of receptors for relaxin in the ligamentum teres of female infants who undergo open reduction for developmental dysplasia of the hip

Table 1 Results of Staining the Ligamentum Teres for Relaxin Receptors in Infants with Developmental Dysplasia of the Hip Treated with Open Reduction and Control Infants with Hip Fractures Treated with Hip Replacement

Characteristic	Infants with developmental dysplasia of the hip, n = 26	Missed abortus fetuses as control n = 12	P
Age, mean (SD), months	21.7 (5.74)	27.8 (5.4) weeks
Females, n (%)	20 (77%)	9 (75%)	> 0.05
Right hip involved, n (%)	10 (38%)	5 (42%)	> 0.05
H score^a, mean (SD)	215 (59)	52 (48)	< 0.001

^aH score = 3 × (percent of cells stained at high intensity) + 2 × [(percent of cells stained at medium intensity) + 1 × (percentage of cells stained at mild intensity)]. See text for details

ISSN: 1749-799X