In case of dysplastic coxarthrosis, MSCT diagnostics makes it possible to accurately determine the angle between planar formations and the center of rotation for the treatment of the acetabulum. The developed device for measuring the angle between planar anatomical formations makes it possible to determine the angle between planar formations and the remission point in the true acetabulum for centralization of the acetabular component in patients with dysplastic coxarthrosis. Relevance. Dysplastic coxarthrosis is a special type of degenerative-dystrophic lesion of the hip joint, manifested by deformation, disorganization and spatial inconsistency of all its components and structures. Despite the timely early detection of congenital underdevelopment of the elements of the hip joint, the problem of diagnosis and treatment of dysplastic coxarthrosis is still far from final resolution [4, 6, 9].