Аннотация
Hip dysplasia is a severe pathology of the musculoskeletal system which, if not diagnosed and treated in time, leads to impaired function of the hip joint. This leads to osteoarthritis, which requires surgical intervention. This report describes a case of non-union of the transverse subluxation shortening osteotomy zone combined with total hip replacement of the left hip joint. It should be noted that our report/study had some limitations, such as a short follow-up period and one patient. We believe that further research with a long follow-up period and a larger sample of patients with Crowe type DDH is needed to obtain good results. This study and patient follow-up are ongoing.Key words: Hip dysplasia, endoprosthesis, subluxation shortening osteotomy, nonunions.