This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Neuromuscular disorders, Subject name: Orthopaedics
[{'content': '15/F complains of anterior knee pain, increased on climbing stairs and getting up after prolonged sitting. Diagnosis is: \nSelect and explain. \nA. Chondromalacia patellae, B. Bipaite patellae, C. Plica syndrome, D. Patellofemoral ahritis', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Given scenario suggests diagnosis of Chondromalacia patellae Plica syndrome- anterior knee pain, clicking, clunking, and a popping sensation on patellofemoral loading activity such as squatting Patellofemoral ahritis will be seen at a later age and will have pain in all movements of knee. Bipaite patella is congenital fragmentation of patella and is usually asymptomatic.', 'role': 'assistant'}]