Characteristics of three-dimensional acetabular morphology of patients with excellent outcome after rotational acetabular osteotomy over 20 years

Abstract Background Rotational acetabular osteotomy (RAO) is a type of pelvic performed to improve the bony coverage against femoral head for patients with dysplasia. The ideally evaluated three-dimensionally; however, there paucity published data regarding three-dimensional morphology in long-term excellent outcome after RAO. present study investigated characteristics RAO comparison normal hip joints and those converted total arthroplasty (THA) because osteoarthritis (OA) progression. Methods Anteroposterior plain radiograph computed tomography 57 (17 20 years or more RAO, 16 joints, THA RAO) were analyzed. two-dimensional lateral center-edge (CE) angle from radiographs anteversion, anterior sector angle, posterior (CT) images calculated. Results Compared THA, all parameters similar particularly analyses. was excessive, whereas deficient Anterior impingement instability may be cause OA progression Conclusion Caution must taken avoid rotating separated fragment excessively direction during prevent achieve outcome.