All of the following statements are true about development dysplasia (DDH) of the hip, EXCEPT:
Twin pregnancy has not been mentioned as a risk factor for developmental dysplasia of hip. All other statements in relation to DDH are true. Ref: Tochdjian's Paediatric Ohopaedics, 3rdd Edtion, Pages 514, 516, 520.
It is more common in females
Oligohydramnios is associated with a higher risk of DDH
The hourglass appearance of the capsule may prevent a successful closed reduction
Twin pregnancy is a known risk factor