Copyright information:Taken from "Volumetric computerized tomography as a measurement of periprosthetic acetabular osteolysis and its correlation with wear"Arthritis Research 2001;4(1):59-63.Published online 3 Oct 2001PMCID:PMC64853.Copyright © 2001 Looney et al, licensee BioMed Central Ltd 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.