This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Lower Limb and Foot & Ankle Problems, Subject name: Orthopaedics
[{'content': 'Rocker bottom foot is due to - \nSelect and explain. \nA. Overtreatment of CTEV, B. Malunited fracture calcaneum, C. Horizontal talus, D. Neural tube defect', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is 'a' i.e., Overtreatment of CTEV Rocker bottom footo Rocker bottom foot is a foot with a convex plantar surface with an apex of convexity at the talar head (normal plantar surface is concave). Causes of Rocker Bottom foot areCongenital vertical talusOvercorrection of CTEVImproper correction of CTEV, i.e. forceful correction of equines by dorsiflexion before correction of adduction, varus and inversion.Edward's syndrome, Escobar syndrome, Apert's syndrome.o Congenital vertical talus may be associated with arthrogryposis, Prune belly syndrome, neurofibromatosis, and spinal muscular dystrophy.", 'role': 'assistant'}]