Cost-effectiveness analysis of custom-made and serial acetabular components in revision hip arthroplasty by Rashid M. Tikhilov, Alisagib A. Dzhavadov, Alexey O. Denisov, Abdula. M. Сhililov, Magomed A. Cherkasov, Stanislav S. Bilyk, Ilkhom E. Khujanazarov, Igor I. Shubnyakov