<unk>  is said to be present when passive dorsiflexion of the ankle by the examiner elicits sharp pain in the calf. It is caused by a thrombosis of the deep veins of the leg. This sign is frequently elicited in clinical practice because of the ease of use, although it is falling into disfavor because of risk of embolization and because it is frequently positive in individuals without deep vein thrombosis or DVT. It is named for the American physician, John<unk> .
Homans' sign
Rovsing's sign
Hegar's sign
Cullen's sign
Adson's sign
Aaron's sign
Ballance's sign
Castell's sign