Figure 2From: Hemiarthroplasties in young patients with osteonecrosis or a tumour of the proximal femur; an observational cohort study Kaplan Meier survival plot of only bipolar hemiarthroplasties with conversion or revision as endpoint. A survival plot of only unipolar hemiarthroplasties was not deemed valuable because of the small number of unipolar implants.Back to article page