Comparison of Conventional Polyethylene Wear and Signs of Cup Failure in Two Similar Total Hip Designs

Figure 1

(a) The machined polyethylene acetabular cup retrieved at 5.5 years in this study paired with a cobalt chrome head. A photomicrograph of the nonarticulating surface of the retrieved conventional UHMWPE machined liner (b) 40x and (c) 95x (backscattered Topographical mode).