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: Orthopaedics
[{'content': "Osgood-Schlatter's disease is seen in - \nSelect and explain. \nA. Proximal tibia, B. Proximal femur, C. Distal tibia, D. Distal femur", 'role': 'user'}, {'content': "Answer: A \nExplanation: Osgood-Schlatter disease (Tibial tubercle traumatic apophysis or Louise's knees disease) \n\nOsgood-Schlatter disease is osteochondritis of tibial tuberosity (a prominence located on the anterior aspect of the proximal/upper tibia).\nThe disease is most common in active boys aged 10-15. It most commonly occurs in just one leg but can occur in both at the same time.\nThe natural history is benign, with almost all cases asymptomatic by skeletal maturity.\nSurgical excision of residual ossicle has been described with a good outcome.", 'role': 'assistant'}]