Рентгеноанатомические особенности строения тазобедренного сустава у детей с тератогенным вывихом бедра при артрогрипозе

The purpose - to identify the Х-ray anatomical features of the dislocated hip in children with arthrogryposis, to compare Х-ray and CT scans of hips in patients with arthrogryposis and DDH. Materials and methods. We examined the 98 X-rays and CT scans of the pelvis (120 hips) in children aged from 5 months to 7 years with a hip dislocation in arthrogryposis (main group) and DDH (control group). Results. Cranio-lateral displacement of the femoral head was less pronounced in the main group than in the control. Deficiency of the roof and anterior acetabular margin are typical for the comparison groups, but these changes are significantly less pronounced in the main group (p<0,0001). Also revealed that the posterior acetabular margin developed significantly greater in the main group. For the patients in the main group up to 3 years, the pathological femoral antetorsion is not typical in contrast to the control group (p<0,0001), however, it occurs in older age (p<0,14). At the compared groups the true values of the NSA do not exceed the age norm. Conclusion. Examination protocol of the hip dislocation in children with arthrogryposis must include X-ray and CT of the pelvis for reliable evaluation of the femoral and acetabular component and preoperative planning.