The invention relates to a hip joint prosthesis comprising a ceramic inner sliding cup that, on its outside, is surrounded by a plastic covering, for inserting into an outer metal cup or for directly implanting with the aid of bone cement. A ball head, which is mounted on a shaft, articulates inside the inner sliding cup, and said shaft can be anchored inside the femur. In order to increase the strength with regard to tilting and turning, the exterior of the sliding cut is provided with a structuring.