title: The effect of osteoarthritis on functional outcome following hemiarthroplasty for femoral neck fracture: a prospective observational study.
abstract: BACKGROUND
  The influence of pre-existing radiographic osteoarthritis on the functional outcome of elderly patientents with displaced intracapsular fractures of the femoral neck treated by hemiarthroplasty is unclear.
  
  
  METHODS
  We prospectively examined the impact of pre-existing osteoarthritis on the functional outcome of 126 elderly patients with displaced intracapsular fracture of the femoral neck treated by hemiarthroplasty.
  
  
  RESULTS
  The mean age of the cohort was 82.7 years. At 12 months, we observed no statistically significant differences in the Harris hip score (p = 0.545), the timed up and go test (p = 0.298), the Tinetti test (p = 0.381) or the Barthel Index (p = 0.094) between patients with Kellgren and Lawrence grades 3 or 4 osteoarthritis, and patients with grades 0 to 2 changes. Furthermore, there were no differences in complication or revision rates.
  
  
  CONCLUSIONS
  Our findings challenge the hypothesis that pre-existing osteoarthritis is a contraindication to hemiarthroplasty in elderly patients with femoral neck fracture.
authors.affiliation: Department of Trauma, Hand and Reconstructive Surgery, University of Giessen and Marburg, Baldinger Straße, 35043, Marburg, Germany. Christoph.boese@googlemail.com.|Department of Orthopaedic and Trauma Surgery, University Hospital of Cologne, Joseph-Stelzmann-Straße 9, 50931, Cologne, Germany. Christoph.boese@googlemail.com.
authors.forename: Christoph Kolja
authors.initials: CK
authors.lastname: Boese
authors.affiliation: Department of Trauma, Hand and Reconstructive Surgery, University of Giessen and Marburg, Baldinger Straße, 35043, Marburg, Germany. buecking@med.uni-marburg.de.
authors.forename: Benjamin
authors.initials: B
authors.lastname: Buecking
authors.affiliation: Department of Trauma, Hand and Reconstructive Surgery, University of Giessen and Marburg, Baldinger Straße, 35043, Marburg, Germany. bliemel@med.uni-marburg.de.
authors.forename: Christopher
authors.initials: C
authors.lastname: Bliemel
authors.affiliation: Department of Trauma, Hand and Reconstructive Surgery, University of Giessen and Marburg, Baldinger Straße, 35043, Marburg, Germany. ruchh@med.uni-marburg.de.
authors.forename: Steffen
authors.initials: S
authors.lastname: Ruchholtz
authors.affiliation: Department of Trauma, Hand and Reconstructive Surgery, University of Giessen and Marburg, Baldinger Straße, 35043, Marburg, Germany. frink@med.uni-marburg.de.
authors.forename: Michael
authors.initials: M
authors.lastname: Frink
authors.affiliation: Department of Trauma, Hand and Reconstructive Surgery, University of Giessen and Marburg, Baldinger Straße, 35043, Marburg, Germany. lechler@med.uni-marburg.de.
authors.forename: Philipp
authors.initials: P
authors.lastname: Lechler
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D005260:Female; D005265:Femoral Neck Fractures / Q000150:complications / Q000601:surgery*; D062785:Hemiarthroplasty; D006801:Humans; D008297:Male; D015207:Osteoarthritis, Hip / Q000150:complications*; D011446:Prospective Studies; D020127:Recovery of Function; D016896:Treatment Outcome