This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Bony dysplasia and soft tissue affection, Subject name: Orthopaedics
Housemaids knee is bursitis of - 
Select and explain. 
A. Prepatellar bursa, B. Infrapatellar bursa, C. Olecranon, D. Ischial bursa
A: Prepatellar bursa
Answer: A: Prepatellar bursa 
Explanation: Prepatellar bursitis is known as house maid&;s knee which is seen in the lower half of patella and upper half of ligamentum patella. Reference- TB of ohopaedics- Ebnezar-3rd edition