Cementless acetabular revision - Evaluation at an average of 10.5 years

This study reviews the clinical and radiographic results of 138 consecutive cementless acetabular revisions in 131 patients performed for aseptic loos ening at a mean of 10.5 years followup. Kaplan-Meier survivorship of these components was 84% at 11.5 years. Two components (1.8%) in two patients wer e considered aseptically loose based on radiographic criteria; one patient was symptomatic but the component was not revised because of the patient's poor health, and the other patient was asymptomatic, Pelvic osteolysis was present in 19 hips (17%), appearing at a mean of 103 months. All but two of these were small lesions (< 2 cm) at the periphery of the components. Neve rtheless, the incidence of osteolysis has increased with time, and continue d followup is warranted, Separation or fragmentation of the fiber-metal por ous pads was uncommon (8.3%), but was significantly :associated with pelvic osteolysis; this finding has not been reported before with this component, Five patients underwent late revision surgery (after 100 months), one for deep infection, one for periprosthetic femur fracture, and three for late r ecurrent dislocation, Harris hip scores averaged 81 points (good) at final followup, which is unchanged from the authors' last report on this group. A cetabular revision with a fiber-metal hemispherical component appears durab le at a mean followup of more than 10 years.