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
Jumper's knee is due to - 
Select and explain. 
A. Sacral fracture, B. Patellar tendonosis, C. Tibial fracture, D. Fibular fracture
B: Patellar tendonosis
Answer: B: Patellar tendonosis 
Explanation: 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.