The Incidence and Volume of Osteolysis at a Minimum 5-Year Follow-Up With Highly Cross-Linked and Non–Cross-Linked Polyethylene

In both laboratory and clinical studies, cross-linked polyethylene has shown decreased wear rates; but the effect on osteolysis still needs to be examined. This study sought to determine if the incidence and volume of osteolysis decreased with the use of a cross-linked polyethylene. Computed tomography (CT) was used in this study because it more accurately measures volume than radiographs and can detect small lesions, making it useful for the early detection of osteolysis.