A method of implanting a prosthetic acetabular cup into a patient is disclosed. The method comprises gaining access to an acetabulum of the patient, where the acetabulum includes an inner portion formed of bone and an outer portion formed of articular cartilage. The method also comprises creating a recess within the articular cartilage of the outer portion of the acetabulum without removing any portion of bone from the inner portion of the acetabulum. The recess is shaped to mate with a snap-fit structure of the prosthetic acetabular cup. Finally, the method comprises securely engaging the prosthetic acetabular cup with the acetabulum by snap-fitting the snap-fit structure of the prosthetic acetabular cup with the recess in the articular cartilage of the outer portion of the acetabulum.