title: Modeling of unstable pelvic fractures for 20 ° sagittally rotated pelvic displacement.
abstract: Early and accurate assessment of unstable pelvic fractures decreases mortality and morbidity by improving the outcomes of closed reduction surgery. In some circumstances (such as in developing countries or in acute trauma), accurate computed tomography (CT) 3D reconstructions are difficult to obtain and plain radiography must be relied upon for surgical planning. Therefore, a simulation model of pelvic displacement was evaluated as a basis for improving the assessment of pelvic fracture displacement from plain radiography images. The simulated model was based on a modified anteroposterior (AP) view of the pelvis constructed using anatomical data. Plain radiography imaging data of sagittal 20 ° hemipelvic rotation, similar to that observed in trauma, was obtained from the simulated model and were compared with normal pelvic rings from 10 cadaveric specimens (actual model). For each data set, the anterior superior iliac spine and ipsilateral pubic symphysis were measured on both sides. There was no significant difference between pelvic sides in the simulated and actual models (P = 0.870). Furthermore, no significant difference was found between the rotational degree of each pelvis based on calculated or simulated degrees and the 20 ° rotational angle (P = 0.322). A simulation model based on plain radiography of pelvic displacement could contribute to the optimal surgical management of unstable pelvic fractures without relying on CT.
authors.affiliation: Department of Orthopedics, Beijing Jishuitan Hospital, the Fourth Medical College, Peking University, Beijing 100035, China. Electronic address: xinbaowusci@126.com.
authors.forename: Xinbao
authors.initials: X
authors.lastname: Wu
authors.affiliation: Department of Orthopedics, Beijing Jishuitan Hospital, the Fourth Medical College, Peking University, Beijing 100035, China.
authors.forename: Yu'neng
authors.initials: Y
authors.lastname: Li
authors.affiliation: Department of Orthopedics, Beijing Jishuitan Hospital, the Fourth Medical College, Peking University, Beijing 100035, China.
authors.forename: Xu
authors.initials: X
authors.lastname: Sun
authors.affiliation: Department of Orthopedics, the Second Affiliated Hospital, Wenzhou 325027, China.
authors.forename: Jianshun
authors.initials: J
authors.lastname: Wang
authors.affiliation: Department of Orthopedics, Beijing Jishuitan Hospital, the Fourth Medical College, Peking University, Beijing 100035, China.
authors.forename: Chunpeng
authors.initials: C
authors.lastname: Zhao
authors.affiliation: Department of Orthopedics, Beijing Jishuitan Hospital, the Fourth Medical College, Peking University, Beijing 100035, China.
authors.forename: Minghui
authors.initials: M
authors.lastname: Yang
authors.affiliation: Department of Orthopedics, Beijing Jishuitan Hospital, the Fourth Medical College, Peking University, Beijing 100035, China.
authors.forename: Shiwen
authors.initials: S
authors.lastname: Zhu
authors.affiliation: Department of Orthopedics, Beijing Jishuitan Hospital, the Fourth Medical College, Peking University, Beijing 100035, China.
authors.forename: Qiyong
authors.initials: Q
authors.lastname: Cao
authors.affiliation: Department of Orthopedics, Beijing Jishuitan Hospital, the Fourth Medical College, Peking University, Beijing 100035, China.
authors.forename: Honghua
authors.initials: H
authors.lastname: Wu
authors.affiliation: Department of Orthopedics, Beijing Jishuitan Hospital, the Fourth Medical College, Peking University, Beijing 100035, China.
authors.forename: Manyi
authors.initials: M
authors.lastname: Wang
mesh_terms: D000328:Adult; D003198:Computer Simulation; D050723:Fractures, Bone / Q000000981:diagnostic imaging* / Q000503:physiopathology / Q000601:surgery*; D006801:Humans; D008297:Male; D008875:Middle Aged; D008954:Models, Biological; D010384:Pelvic Bones / Q000000981:diagnostic imaging / Q000293:injuries* / Q000503:physiopathology / Q000601:surgery*; D011859:Radiography; D012399:Rotation; D055815:Young Adult
keywords: Closed reduction; Mathematic model; Pelvic fracture; Pelvic injury; Radiology; Simulation