All of the following statements are true about development dysplasia (DDH) of the hip, EXCEPT:: (A) It is more common in females, (B) Oligohydramnios is associated with a higher risk of DDH, (C) The hourglass appearance of the capsule may prevent a successful closed reduction, (D) Twin pregnancy is a known risk factor
Answer is D. 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.