This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Osteochondritis and Avascular Necrosis, Subject name: Orthopaedics
[{'content': 'Bakers cyst is a type of: \nSelect and explain. \nA. Pulsion diveiculum of knee joint, B. Retention cyst, C. Bursitis, D. Benign tumor', 'role': 'user'}, {'content': "Answer: A \nExplanation: Baker's cyst:- It is a pulsion diveiculum of knee joint.- It usually found in the posterior aspect of the knee joint.- It is associated with medial meniscal injury.", 'role': 'assistant'}]