From: Vitamin D and oestrogen receptor polymorphisms in developmental dysplasia of the hip and primary protrusio acetabuli – A preliminary study
Control
DDH
PPA
Number
101
45
20
Age – Mean (range)
42.6 (19–60)
46.1 (22–69)
47.5 (28–65)
Age at presentation – Mean (range)
NA
14.5 (0–48)
22.05 (5–46)
Gender
47 M/54 F
4 M/41 F
3 M/17 F
Positive Family History
3
0