The object of this paper is to illustrate the surgical steps in sequence, which were found more useful and informative for DDH of a limited age (8-12) years. Throughout a period of 25 years of work in this field. The retrospective study showed clearly the pitfalls, complication, how to avoid them, to be aware about them and how to solve them properly if they occurred. Few remarks will be mentioned about neglected subluxated hips and the proper way of dealing with them to serve the patient for few years before embarking on total hip replacement. Such Chiari or periacetabular triple osteotomy. The conclusion I reached finally was that experience in this part as in any other part of surgery comes slowly and gradually, it grows with years and familiarity with the subject is established form early years of management to adulthood. I believe that we can learn more from one mistake than from ten successes.