Garcia-Rey E, et al. - Researchers assumed that the acetabular bone defect during re-revision surgery after impaction bone grafting (IBG) was smaller than during the previous revision surgery. They further examined clinical and radiological results of re-revisions with repeated use of IBG. In this study, 45 hips (45 patients) that had failed due to aseptic loosening were re-revised between 1992 and 2016 in a series of 382 acetabular revisions using IBG and a cemented component. They compared acetabular bone defects graded according to Paprosky during the first and the re-revision surgery. They analyzed clinical and radiological findings. A competing risk analysis was applied to conduct survival analysis. Using IBG, bone stock restoration can be obtained in revision hip surgery. This method is also beneficial in re-revision surgery; nevertheless, a better surgical technique including a closer distance to the hip rotation centre could reduce the risk of radiological migration of the acetabular component. A longer follow-up is needed to evaluate potential fixation deterioration.