title: Acetabular fracture patterns and their associated injuries.
abstract: OBJECTIVE
  Characterize relationships between acetabular fractures patterns and visceral organ injuries.
  
  
  METHODS
  Retrospective review.
  
  
  METHODS
  : University medical center.
  
  
  METHODS
  Three hundred twenty-three patients with displaced acetabular fractures identified in a prospectively maintained database.
  
  
  METHODS
  Acetabular fractures were classified according to force vector at the time of injury. Posterior wall, posterior column, and posterior column/posterior wall injuries were assumed to have been caused by an axial load. The remaining seven acetabular fracture types were assumed to have resulted from a lateral or trochanteric load. Records were reviewed to establish any relationship between acetabular fracture patterns defined by their force vector and injuries to other skeletal and nonskeletal organ systems.
  
  
  METHODS
  Comparison of organ injury end points of additional skeletal injury; bowel, bladder, brain, kidney, liver, spleen, and lung injury; retroperitoneal hematoma; and vascular injury of the pelvis. Data were analyzed using chi-square, with statistical significance defined as P < 0.05.
  
  
  RESULTS
  Acetabular fractures resulting from lateral loads had a statistically higher association with retroperitoneal hematomas (P < 0.001), spleen (P < 0.008), liver (P < 0.002), vascular (P < 0.001), kidney (P < 0.001), and bladder (P < 0.001) injuries than did posteriorly directed acetabular fractures. Transverse posterior wall fractures exhibited intermediate characteristics between axial load and the remaining lateral load patterns.
  
  
  CONCLUSIONS
  Direction of force is important in the etiology of nonskeletal injury patterns. The possibility of additional nonskeletal injury increases from the rates seen in axial load patterns to those in lateral load patterns involving the anterior column.
authors.affiliation: Department of Orthopaedic Surgery, University of Mississippi Medical Center, Jackson, MS, USA. sporter@orthopedics.umsmed.edu
authors.forename: Scott E
authors.initials: SE
authors.lastname: Porter
authors.forename: Alan C
authors.initials: AC
authors.lastname: Schroeder
authors.forename: Sergey S
authors.initials: SS
authors.lastname: Dzugan
authors.forename: Matt L
authors.initials: ML
authors.lastname: Graves
authors.forename: Lei
authors.initials: L
authors.lastname: Zhang
authors.forename: George V
authors.initials: GV
authors.lastname: Russell
mesh_terms: D000007:Abdominal Injuries / Q000209:etiology*; D000063:Accidents, Traffic; D000077:Acetabulum / Q000293:injuries*; D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D001265:Athletic Injuries / Q000150:complications; D001696:Biomechanical Phenomena; D002648:Child; D005260:Female; D050723:Fractures, Bone / Q000150:complications*; D006801:Humans; D008297:Male; D008875:Middle Aged; D012128:Respiratory Distress Syndrome / Q000209:etiology*; D012189:Retrospective Studies; D014947:Wounds and Injuries