title: Subsequent contralateral hip fractures: can at-risk patients be identified? An observational study of 5,102 patients.
abstract: OBJECTIVE
  The aim of this study was to evaluate a sample of patients who sustained hip fractures during the years 1997-2011 and identify risk factors for a subsequent contralateral hip fracture; one-year mortality rates were compared in both groups.
  
  
  METHODS
  A total of 5,102 patients with hip fractures were prospectively studied to identify patients who had also suffered a subsequent, contralateral, hip fracture (SCHF). Those patients who had sustained a second fracture within 18 months of the initial fracture were then studied. All data were statistically processed.
  
  
  RESULTS
  Within 18 months of the first fracture, a SCHF occurred in 105 patients (2.1 %). These patients were an average of three years older than those in the single fracture group. Risk factors for the development of a SCHF included: female gender, residing in a residential care facility, and limited mobility prior to injury. Trochanteric fractures did not represent a statistically significant risk factor for SCHF. More than three-quarters of patients with subsequent injuries suffered the same type of fractures on the opposite side. Patients with subsequent fractures had lower one-year mortality rates than patients with only one fracture.
  
  
  CONCLUSIONS
  Patients at greatest risk for a SCHF were women with limited mobility who resided in nursing homes for the elderly. The lower mortality rate associated with second fractures shows that the prognosis for such patients is good. Since the at-risk group is so well defined, prophylactic measures for these patients should be utilized in order to minimize the risk of additional fractures.
authors.affiliation: Department of Orthopaedics and Traumatology, Third Faculty of Medicine, Charles University, and University Hospital Kralovske Vinohrady, Šrobárova 50, 100 34, Prague, Czech Republic, skala@fnkv.cz.
authors.forename: Jiří
authors.initials: J
authors.lastname: Skála-Rosenbaum
authors.forename: Valér
authors.initials: V
authors.lastname: Džupa
authors.forename: Radek
authors.initials: R
authors.lastname: Bartoška
authors.forename: Daniel
authors.initials: D
authors.lastname: Říha
authors.forename: Petr
authors.initials: P
authors.lastname: Waldauf
authors.forename: Václav
authors.initials: V
authors.lastname: Báča
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D005260:Female; D005265:Femoral Neck Fractures / Q000453:epidemiology; D006620:Hip Fractures / Q000453:epidemiology*; D006801:Humans; D008297:Male; D011379:Prognosis; D011446:Prospective Studies; D012307:Risk Factors