Two types of FAI can be distinguished: cam impingement and pincer impingement. The pathomechanism of FAI is a dynamic condition caused by an altered osseous morphology of the acetabulum or femoral head-neck junction. There is a possibility of secondary FAI due to excessive forward coverageįemoroacetabular impingement (FAI) and developmental dysplasia of the hip (DDH) are major etiological factors in the development of osteoarthritis (OA) of the hip. Radiographs, and caution should be employed during surgery in patients withĭDH. In patients who underwent RAO or CPO was relatively high in preoperative The presence of cam-type deformity and acetabular retroversion Hips, either positive cross-over sign or posterior sign in acetabulum, and anĪlpha angle of ≥50.5° in femur were observed in six hips with progression of In 16 of the 24 hips there was a one-grade progression in 8 hips. Asĭetermined using the Tönnis scale, no progression of osteoarthritis was found Of ≥50.5° were observed in 19 hips (79.2%) in preoperative evaluation. Were revealed in 16 hips (66.7%) and cam-type deformities with an alpha angle Crossover signs were revealed in 7 hips (29.2%) posterior wall signs Preoperative radiograph was evaluated on sharp angle, center-edge angle, alpha angle, crossover sign and posterior We excluded patients with moderate and severe hip osteoarthritisĪnd major femoral head deformities. Six hips had grade 0 and eighteen hips had grade 1 OA according to the TönnisĬlassification. Hips with hip dyaplasia who underwent CPO or RAO were included in this study. (CPO), and examine the frequency of femoroacetabular impingement (FAI) relatedīone morphology in the acetabulum and femoral head-neck junction. Rotational acetabular osteotomy (RAO) or curved peri-ace-tabular osteotomy With cases of developmental dysplasia of the hip (DDH) leading to The purpose of this study was to evaluate the preoperative radiographs
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