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: Orthopaedics
Ortolani test is positive when the examiner hears the - 
Select and explain. 
A. Clunk of entry on extension and adduction of hip, B. Clunk of entry on abduction and flexion of hip, C. Click of exit on abduction and flexion of hip, D. Click of exit on extension and adduction of hip
B: Clunk of entry on abduction and flexion of hip
Answer: B: Clunk of entry on abduction and flexion of hip 
Explanation: The hip and knee are held in a flexed position and gradually abducted.A click of entrance will be felt as the femoral head slips into acetabulum from position of dislocation. This test indicates reduction of the dislocated hip.It is done between 3&9 months . Barlows test and ortolani test should be performed as screening test in all suspected CDH.