Damage, significantly impairing the quality of life, coxarthrosissal can meet a young age. Therefore, nowadays the prosthesis implantation is performed in the most active life period of the patient. Besides, it is known that the replacement of the prosthesis will be necessary later [1]. When acetabular cups were measured, the results were analysed and the differences were determined, I took the coordinate systems needed to describe the movement of the prosthesis