title: Irreducible fracture-dislocation of the hip: a severe injury with a poor prognosis.
abstract: OBJECTIVE
  To determine the outcome of and prognostic factors associated with irreducible fracture-dislocations of the hip.
  
  
  METHODS
  Retrospective review of a prospectively gathered trauma database.
  
  
  METHODS
  Using a prospectively gathered trauma database, we identified twenty-five patients with fracture-dislocations of the hip that were irreducible with closed means under a general anaesthetic. All were victims of high-energy trauma with severe injuries (mean Injury Severity Score = 25, range 9 to 54). Eighteen patients had multiple fractures, fifteen had associated systemic injury, and only four sustained the hip injury in an isolated fashion. There were seven associated sciatic nerve injuries (28 percent) and nine associated femoral head or neck fractures (36 percent). The mean time from injury to open reduction was 15.3 hours (range 3 to 58 hours).
  
  
  RESULTS
  Twenty-three patients (92 percent) were followed to definitive outcome. Despite accurate reduction, only six patients had satisfactory results (Thompson-Epstein = good or excellent). Poor results were associated with delay in reduction and an associated femoral head or neck fracture. Reasons for the poor results include avascular necrosis, posttraumatic arthritis or chondrolysis, persisting sciatic nerve injury, and heterotopic ossification.
  
  
  CONCLUSIONS
  An irreducible fracture-dislocation of the hip is a severe injury with a poor prognosis and a high incidence of associated injuries. Outcome is best in patients who do not have an associated femoral head or neck fracture and those whose dislocation is promptly reduced.
authors.affiliation: Division of Orthopaedics, St. Michael's Hospital and the University of Toronto, Ontario, Canada.
authors.forename: M D
authors.initials: MD
authors.lastname: McKee
authors.forename: M E
authors.initials: ME
authors.lastname: Garay
authors.forename: E H
authors.initials: EH
authors.lastname: Schemitsch
authors.forename: H J
authors.initials: HJ
authors.lastname: Kreder
authors.forename: D J
authors.initials: DJ
authors.lastname: Stephen
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D005260:Female; D005270:Femur Head / Q000293:injuries*; D005593:Fracture Fixation, Internal / Q000379:methods*; D006617:Hip Dislocation / Q000150:complications* / Q000000981:diagnostic imaging / Q000601:surgery*; D006620:Hip Fractures / Q000150:complications* / Q000000981:diagnostic imaging / Q000601:surgery*; D006801:Humans; D015601:Injury Severity Score; D008297:Male; D008875:Middle Aged; D009104:Multiple Trauma / Q000150:complications* / Q000000981:diagnostic imaging / Q000601:surgery*; D011379:Prognosis; D011446:Prospective Studies; D011859:Radiography; D012189:Retrospective Studies; D012584:Sciatic Nerve / Q000293:injuries*; D013997:Time Factors; D016896:Treatment Outcome