RT Journal Article SR Electronic T1 An unusual cause of an acutely locked knee JF Emergency Medicine Journal JO Emerg Med J FD BMJ Publishing Group Ltd and the British Association for Accident & Emergency Medicine SP 588 OP 589 DO 10.1136/emj.2003.012567 VO 22 IS 8 A1 S Blake A1 C Wright A1 C Edwards YR 2005 UL http://emj.bmj.com/content/22/8/588.abstract AB