RT Journal Article SR Electronic T1 The Segond fracture: a clue to intra-articular knee pathology JF Emergency Medicine Journal JO Emerg Med J FD BMJ Publishing Group Ltd and the British Association for Accident & Emergency Medicine SP 846 OP 847 DO 10.1136/emermed-2011-200356 VO 29 IS 10 A1 Cosgrave, Ciaran H A1 Burke, Neil G A1 Hollingsworth, John YR 2012 UL http://emj.bmj.com/content/29/10/846.abstract AB This short report presents the case of a 32-year-old man with a knee injury sustained while playing football. A plain radiograph revealed a Segond fracture and a subsequent MRI confirmed a complete anterior cruciate ligament rupture. While the Segond fracture, and its associated intra-articular pathology, is well recognised among orthopaedic surgeons, it is less well recognised among staff in the emergency department. The report aims to emphasise the importance of plain radiographs in patients with a history of knee injury and to highlight that this seemingly innocuous avulsion fracture may reveal more severe underlying pathology.