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
[{'content': 'Rachitic rosary is a feature of: March 2013 (c) \nSelect and explain. \nA. Rickets, B. Scurvy, C. Osteomalacia, D. Osteoporosis', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ans. A i.e. Rickets Rickets Pathology: Defective mineralization of osteoid/ bones & cailage Features: - Craniotabes, - Wide open fontanelle, - Rachitic rosary (Enlargement of costochondral junction) X-ray appearances: - Widening & thickening of epiphysis, Cupping & fraying of metaphysis', 'role': 'assistant'}]