This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Miscellaneous, Subject name: Anatomy
Waddling Gait is seen in- 
Select and explain. 
A. Unilateral development dysplasia of hip, B. Bilateral Developmental Dysplasia of Hip, C. Slipped Capital Femoral Epiphysis, D. Pehes Disease
B: Bilateral Developmental Dysplasia of Hip
Answer: B: Bilateral Developmental Dysplasia of Hip 
Explanation: *In a bilateral congenital dislocation of hip the gait is described as 'duck like waddle. In unilateral cases the child lurches towards affected side. This is known as abductor lurch or Trendelenburg gait. REF:Ref: Tachdijian's pediatric Ohopaedics 3rd/e p.83