“…As early as the late nineteenth century till early twentieth century some similar or identical tests based on infant hip instability, i.e., dislocated and repositionable, or repositioned and dislocatable hips, were developed by some dedicated physicians, such as Roser, Calot, Le Damany, Ortolani, Barlow, and so on for early diagnosis of DDH ( 9 , 10 ). However, due to the absence of formal screening in most countries, DDH is usually diagnosed after a child starts standing and walking.…”