 Recent studies have indicated a high incidence of postoperative periprosthetic femoral fracture in elderly patients treated with two commonly used cemented polished, tapered femoral stems. The aim of this study was to compare the prevalence and incidence rate of PPF in a cohort of elderly with femoral neck fractures FNF treated with either a collarless, polished, tapered stem Exeter or an anatomic matte stem Lubinus SP 2. 