title: Atypical Pelvic Crescent Fracture Caused by Vertical Shear Force.
abstract: The crescent fracture consists of a posterior iliac wing fracture with extension into the sacroiliac joint and a dislocation of the sacroiliac joint. This fracture represents a subset of lateral compression injury. The strong posterior ligaments of sacroiliac joint remain intact and a fracture fragment (crescent shape) involving the posterior superior iliac spines remains firmly attached to the sacrum. We report a patient with atypical pelvic crescent fracture that is mainly influenced by vertical shear injury and is characterized by posterior fracture-dislocations of the sacroiliac joint. In this case report, we review the literature on classification and treatment of atypical type of crescent fracture.
authors.affiliation: Department of Orthopedic Surgery, The Catholic University of Korea, Daejeon St. Mary's Hospital, Daejeon, Korea.
authors.forename: Sang-Eun
authors.initials: SE
authors.lastname: Park
authors.affiliation: Department of Orthopedic Surgery, The Catholic University of Korea, Daejeon St. Mary's Hospital, Daejeon, Korea.
authors.forename: Se-Won
authors.initials: SW
authors.lastname: Lee
authors.affiliation: Department of Orthopedic Surgery, The Catholic University of Korea, Daejeon St. Mary's Hospital, Daejeon, Korea.
authors.forename: Weon-Yoo
authors.initials: WY
authors.lastname: Kim
authors.affiliation: Department of Orthopedic Surgery, The Catholic University of Korea, Daejeon St. Mary's Hospital, Daejeon, Korea.
authors.forename: Yong
authors.initials: Y
authors.lastname: Park
keywords: Crescent fracture; Pelvic bones; Vertical shear injury