Door to relocation time for dislocated hip prosthesis: multicentre comparison of emergency department procedural sedation versus theatre-based general anaesthesia.

BACKGROUND Dislocation of a hip prosthesis is a painful event which has an incidence of 4% for primary total hip arthroplasty. Relocation is traditionally performed under general anaesthesia in the operating theatre, but relocation using sedation in the emergency department (ED) has been reported, with a limited success rate of 62%. A study was undertaken to compare door to relocation times for ED sedation and theatre general anaesthesia. METHODS The notes of all patients attending five centres in the south west of England with prosthetic hip dislocation over a 12-month period between 2005 and 2006 were retrospectively reviewed using standardised data collection forms. RESULTS Successful ED reduction was significantly quicker than failed ED reduction and theatre-based general anaesthesia (2 h 21 min vs 8 h 32 min; p<0.001). No statistical difference was found between failed ED reduction and theatre general anaesthesia. CONCLUSIONS Reduction of dislocated hip prostheses in the ED saves nearly 6 h compared with theatre-based general anaesthesia and is therefore advocated.