title: An unusual combination of acetabular and pelvic fracture: is this a new subtype of acetabular fracture?
abstract: BACKGROUND
  Acetabular fractures are a common problem among young males. An acetabular fracture with disruption of the joint surface, if untreated, will rapidly lead to post-traumatic osteoarthritis. Proper reduction and internal fixation depend on accurate classification and the quality of imaging.
  
  
  METHODS
  We present an unusual form of acetabular fracture, which is not included in the conventional classification (Judet and Letournel) ; this occurred in a middle-aged male who was operatively treated without any complications. In this case due to posterior extension of the fracture into the SI joint and concomitant anterior column fracture in the area above the acetabular dome, no portion of the acetabular anterior surface remained connected to the innominate bone.
  
  
  CONCLUSIONS
  We recognized this type of fracture and treated it similarly to both column fractures. We recommend that the classification of acetabular fractures be modified to include this type of fracture.
authors.affiliation: Department of Orthopedics, Imam Hossein Medical Center, Shahid Beheshti University of Medical Sciences, Tehran, IR Iran.
authors.forename: Reza
authors.initials: R
authors.lastname: Tavakoli Darestani
authors.affiliation: Department of Orthopedics, Imam Hossein Medical Center, Shahid Beheshti University of Medical Sciences, Tehran, IR Iran.
authors.forename: Gholamhosein
authors.initials: G
authors.lastname: Kazemian
authors.affiliation: Department of Orthopedics, Imam Hossein Medical Center, Shahid Beheshti University of Medical Sciences, Tehran, IR Iran.
authors.forename: Mohammad
authors.initials: M
authors.lastname: Emami Moghaddam
authors.affiliation: Department of Orthopedics, Imam Hossein Medical Center, Shahid Beheshti University of Medical Sciences, Tehran, IR Iran.
authors.forename: Alirea
authors.initials: A
authors.lastname: Manafi Rasi
authors.affiliation: Department of Orthopedics, Imam Hossein Medical Center, Shahid Beheshti University of Medical Sciences, Tehran, IR Iran.
authors.forename: Yadollah
authors.initials: Y
authors.lastname: Alipour
authors.affiliation: Department of Orthopedics, Imam Hossein Medical Center, Shahid Beheshti University of Medical Sciences, Tehran, IR Iran.
authors.forename: Mohammad Mahdi
authors.initials: MM
authors.lastname: Bagherian Lemraski
keywords: Acetabulum; Fractures, Bone; Wounds and Injuries