Ortolani's sign

Ortolani's sign

[ôr′təlä′nē]
Etymology: Marius Ortolani, twentieth-century Italian surgeon
a click heard in a test for a congenital dislocated hip. It is noted in infancy when the hip slips into or out of the socket. Also called Ortolani click.

Ortolani's sign

a test of hip laxity, used in dogs to diagnose hip dysplasia. A positive sign is a snap as the head of the femur moves back into the acetabulum after being moved to the rim of the acetabulum.