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ANKLE DIASTASIS AUDIT



Abstract

Introduction: Ankle diastasis injury occurs in up to 20% of ankle fractures. Various techniques have been used to treat syndesmosis injuries, but controversy remains and outcome is variable. In light of some recent cases of substandard syndesmosis fixations requiring revision, an audit of our results was undertaken.

Method: Study type: Retrospective audit of radiographs and patient records

Data collection: patients were selected using an orthopaedic database search for operations coded as distal tib/fib ORIF or ankle ORIF.

Study period: 12 months, July 2008 to July 2009 (currently data has been analyzed on the first 6 months only, the remaining 6 months will follow)

Audit questions to be answered: How is ankle diastasis injury being managed? Are we reducing syndesmosis correctly? Should there be a revision to local policy?

Audit standard: Syndesmoses should be adequately reduced and fixation techniques employed should be in accordance with recommendations in standard Orthopaedic reference texts (Rockwood & Green, AO fixation manual 3)

Results: 76 ankle ORIFs in July to December 2008 inclusive. Out of these, 16 had diastasis fixation (21%). 2 of the patients had a syndesmosis width over 6 mm indicating an inadequate reduction of the syndesmosis 1. Both of these required revision surgery. In total 70% of the post operative x-rays showed inadequate syndesmosis fixation or reduction.

Discussion: The single most predictive indicator of a favourable function is accurate reduction of the syndesmosis 2. Substandard fixations are associated with poor long term outcomes. This raises the potential for litigation and the requirement for education and policy change. We have produced policy guidelines for theatre and circulated the information to all surgeons. A further audit will be carried out to assess the effectiveness of this in 6 months time. (The data will be available from this re-audit for presentation at the conference.)

Correspondence should be addressed to: EFORT Central Office, Technoparkstrasse 1, CH – 8005 Zürich, Switzerland. Tel: +41 44 448 44 00; Email: office@efort.org

Author: John Grice, United Kingdom

E-mail: johnegrice@hotmail.com

References

1 Coughlin, Mann, Saltzman. Radiographic evaluation of the foot and ankle. 8th edition. Elsevier Google Scholar

2 Marsh JL, Saltzman CL. Ankle Fractures. Rockwood Google Scholar

3 Rüedi TP, Buckley RE, Moran CG. AO Principles of Fracture Management. 2nd edition 2007 Google Scholar