This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Surgery
Charlie chaplin gait is seen in? 
Select and explain. 
A. Congenial coxa vara, B. Tibial torsion, C. DDH, D. Genu valgus
A: Congenial coxa vara
Answer: A: Congenial coxa vara 
Explanation: Ans. is 'a' i.e., External rotation deformity of tibia Charlie Chaplin Gait Gait that occurs in bilateral external torsion of the tibia caused by faulty sitting or sleeping habits as in maintenance of the spread eagle or frog leg posture. It is seen in alkaptonuria, bilateral external tibial torsion, and flat feet with valgus at ankle.