system
Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
All of the following statements are true about development dysplasia (DDH) of the hip, EXCEPT:
assistant
The correct answer is  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.