<prompt> In a newborn child, abduction and internal rotation produces a click sound. It is -Ortolanis signTelescoping signLachmans signMc Murrays sign  <response>: Barlows testPart 1 Click sound clunck of dislocation on adduction.Part 2 Click sound clunck of reduction on abduction.Ortolanis testClick sound clunk of reduction on abduction.Note :If both Barlows test and ortolanis test are given as options in the same question, go ahead with ortolanis test as some clinicians do not consider part 2 as Barlows test. 