This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Injuries Around the Thigh & Knee, Subject name: Orthopaedics
[{'content': "Jumper's knee is due to - \nSelect and explain. \nA. Sacral fracture, B. Patellar tendonosis, C. Tibial fracture, D. Fibular fracture", 'role': 'user'}, {'content': "Answer: B \nExplanation: Ans. is 'b' i.e., Patellar tendonosis * Jumper's knee - Patellar tendonosis or bursitis* Jumper's fractures of the sacrum are characterized by an H - or U - shaped fracture line in the upper sacrum, usually involving the Sj-S2 region.", 'role': 'assistant'}]