This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Avascular Necrosis, Subject name: Orthopaedics
[{'content': 'Osgood schlatters disease involves? \nSelect and explain. \nA. Tibial tuberosity, B. Femoral condyle, C. Lateral malleolus, D. Medial malleolus', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. (a) Tibial tuberosityRef.-.Apley's system of orthopaedics and fractures edited by Louis Solomon, dividwarwicky selvadurainayagam 9/e, p 575-576y 887)", 'role': 'assistant'}]