title: Incidence and predisposing factors of periprosthetic proximal femoral fractures: a literature review.
abstract: OBJECTIVE
  The purpose of this review article was to investigate the incidence and predisposing factors for periprosthetic proximal femoral fractures (PFF) following total hip arthroplasty.
  
  
  METHODS
  We performed a comprehensive search of the medical literature in MEDLINE and EMBASE databases to review articles related to PFF, their incidence and risk factors.
  
  
  CONCLUSIONS
  The incidence of PPF after primary THA was, in general, lower than after revision THA both for intra- and postoperative PFF. The rate of intraoperative PFF ranged from 0.1% to 27.8% and of postoperative PFF from 0.07% to 18%. Predisposing factors for intraoperative PFF are osteoporosis, rheumatoid arthritis, femoral preparation and surgical technique used to insert the rasp or femoral component, the use of press-fit cementless stems, and revision THA. In case of postoperative PFF, the following seem to be significant risk factors: advanced age, female gender, post-traumatic osteoarthritis, osteoporosis and rheumatoid arthritis, proximal femoral deformities, previous surgery of the affected hip, implant type (especially cementless stems and press-fit implantation), technical errors such as cortical perforation, cortical stress risers, low-energy trauma, osteolysis, loosening and revision THA.
authors: Division of Orthopaedic Surgery, University of Toronto, Toronto, Ontario, Canada.
authors: Claudia C
authors: CC
authors: Sidler-Maier
authors: James P
authors: JP
authors: Waddell
mesh_terms: D019644:Arthroplasty, Replacement, Hip / Q000009:adverse effects*; D015984:Causality; D005264:Femoral Fractures / Q000453:epidemiology* / Q000209:etiology; D006801:Humans; D015994:Incidence; D057068:Periprosthetic Fractures / Q000453:epidemiology* / Q000209:etiology