Figure 2.

Polyethylene wear versus periacetabular osteolysis for all 20 patients entered into the trial of Enbrel^® for prosthetic hip loosening. The solid arrow shows two outliers: one had revision of a cemented acetabular component and the second had recurrent dislocations. The clear arrow shows the patient with the Biomet prosthesis. The rectangle shows outliers with low osteolysis relative to the amount of polyethylene wear.