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Trauma

IS A FRACTURE OF THE TRANSVERSE PROCESS OF L5 A PREDICTOR OF PELVIC FRACTURE INSTABILITY?

European Federation of National Associations of Orthopaedics and Traumatology (EFORT) - 12th Congress



Abstract

The management of pelvic fractures remains a challenging problem for orthopaedic surgeons. The prompt recognition of unstable fracture patterns is important in reducing mortality and morbidity. It is perceived wisdom that a fracture of the transverse process of L5 is a predictor of pelvic fracture instability. There is a paucity of evidence in the literature to support this belief. The aim of our study was to determine if a fracture of the transverse process of L5 was a predictor of pelvic fracture instability.

The Hospital Trauma database was reviewed. Between 2006 and 2009, 65 pelvic fractures were identified. They were classified according to the Burgess and Young classification. There were 37 stable and 28 unstable fractures. 14 patients had an associated fracture of the transverse process of L5; 9 were associated with an unstable fracture pattern. The odds ratio was 3; the relative risk 1.7.

A fracture of the transverse process of L5 is associated with an increased risk of pelvic fracture instability. Its presence should alert the attending physicians to the possibility of an unstable injury.