title: Cemented or uncemented hemiarthroplasty for the treatment of femoral neck fractures?
abstract: OBJECTIVE
  Cemented hemiarthroplasty is preferred in treating displaced fractures of the femoral neck in the elderly. The cementing process may cause a fat embolism, leading to serious complications or death. In this study, we wanted to determine whether use of uncemented hemiarthroplasty (HA) would lead to reduced mortality and whether there are differences in the complications associated with these different types of arthroplasty.
  
  
  METHODS
  From the PERFECT database, which combines information from various treatment registries, we identified 25,174 patients who were treated with hemiarthroplasty for a femoral neck fracture in the years 1999-2009. The primary outcome was mortality. Secondary outcomes were reoperations, complications, re-admissions, and treatment times.
  
  
  RESULTS
  Mortality was lower in the first postoperative days when uncemented HA was used. At 1 week, there was no significant difference in mortality (3.9% for cemented HA and 3.4% for uncemented HA; p = 0.09). This was also true after one year (26% for cemented HA and 27% for uncemented HA; p = 0.1). In patients treated with uncemented HA, there were significantly more mechanical complications (3.7% vs. 2.8%; p < 0.001), hip re-arthroplasties (1.7% vs. 0.95; p < 0.001), and femoral fracture operations (1.2% vs. 0.52%; p < 0.001) during the first 90 days after hip fracture surgery.
  
  
  CONCLUSIONS
  From registry data, mortality appears to be similar for cemented and uncemented HA. However, uncemented HA is associated with more frequent mechanical complications and reoperations.
authors.affiliation: Department of Orthopedics, Traumatology and Hand Surgery, Kuopio University Hospital and University of Eastern Finland, Kuopio.
authors.forename: Tero
authors.initials: T
authors.lastname: Yli-Kyyny
authors.forename: Reijo
authors.initials: R
authors.lastname: Sund
authors.forename: Mikko
authors.initials: M
authors.lastname: Heinänen
authors.forename: Petri
authors.initials: P
authors.lastname: Venesmaa
authors.forename: Heikki
authors.initials: H
authors.lastname: Kröger
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D019644:Arthroplasty, Replacement, Hip / Q000009:adverse effects / Q000379:methods* / Q000401:mortality; D002484:Cementation / Q000009:adverse effects / Q000379:methods* / Q000401:mortality; D016208:Databases, Factual; D005260:Female; D005265:Femoral Neck Fractures / Q000401:mortality / Q000601:surgery*; D005387:Finland / Q000453:epidemiology; D062785:Hemiarthroplasty / Q000009:adverse effects / Q000379:methods* / Q000401:mortality; D006622:Hip Prosthesis; D006801:Humans; D008297:Male; D011475:Prosthesis Failure; D012042:Registries; D012086:Reoperation / Q000706:statistics & numerical data; D016896:Treatment Outcome