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General Orthopaedics

SLIPPED UPPER FEMORAL EPIPHYSIS: A CASE FOR PROPHYLACTIC FIXATION

British Orthopaedic Association (BOA) 2005



Abstract

The consequences of the complications associated with the management of slipped upper femoral epiphysis are a major source of disability in young adults. Whilst the management of chondrolysis, avascular necrosis or malunion of the femoral neck is usually undertaken by paediatric orthopaedic surgeons the initial management of SUFE in many regions is as part of an adult trauma service. This retrospective audit assessed the outcome of the management of SUFE in one such health region in which treatment occurred at three sites by a number of surgeons of varying experience, during the period July 1994 to June 2004. The aim was to compare our outcomes with those published and to identify whether our service should be altered as a consequence.

The case notes and x-rays as recorded in theatre records were retrieved. Of the 64 cases that were treated during this period adequate records for 60 patients were available. Of these 60 patients there were 7 bilateral cases. Fixation in all 67 cases was by a single cannulated screw. In the 53 unilateral cases 17 underwent prophylactic pinning, the remaining 36 remained under observation. Of these nine patients presented with subsequent slips, eight of which were unstable and two had slip angles greater than 60° in which one developed avascular necrosis. Four other cases of avascular necrosis were observed (incidence 6%). Chondrolysis occurred in one patient with persistent pin penetration. In the remaining 73 cannulated screws used for stabilisation and 17 for prophylactic fixation no complications were observed.

The complication rates observed in this series are within those accepted in the literature. The high incidence of subsequent slips and the attendant severity of these when compared with the relative safety of contemporary cannulated screw fixation has led us to recommend prophylactic pinning in our region.