This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Surgery
Passive forcible dorsiflexion of foot with knee extended causes pain in the calf. This is called 
Select and explain. 
A. Moses sign, B. Homan's sign, C. Schwartz sign, D. Fegan's test
B: Homan's sign
Answer: B: Homan's sign 
Explanation: Homan's sign is test for deep vein thrombosis. Passive dorsiflexion of foot with knee extended causes pain in the calf.