There is a high incidence of re-operations after surgery for ankle fractures. According to the Danish Fracture Database (DFDB) the re-operation rate, excluding hardware removal, is almost 10%.

We are conducting a study on the efficacy of an evidence based algorithm for the treatment of ankle fractures.

Treatment of ankle fractures is complex and includes assessment of fracture pattern, severity of soft-tissue involvement and general health- and functional status of the patients. Historically most fractures, undisplaced as well as displaced, were treated non-operatively with acceptable results but in recent years there is an increasing trend towards operative management of unstable fractures. Techniques for operative management of ankle fractures are varied and assessment of instability is mainly based on classic x-ray classification systems such as Lauge-Hansen or the AO that are difficult to reproduce[6].

We hypothesize that a standardized and evidence based approach to ankle fracture management will lead to a decrease in re-operation rate.

The aim of this study is to standardize the management of ankle fractures in our department, by introducing an algorithm based on best evidence present. We want to investigate:

1. The effect of this algorithm on the re-operation rate of surgically treated ankle fractures in a two-year prospective observational setup with a minimum of one-year of follow-up.
2. The need for surgery and functional outcome of patients with isolated lateral malleolus fractures in which the treatment is dictated by ankle stability assessed on weight bearing radiographs.

Inclusion Criteria:

• All patients treated for ankle fractures at our institution during the study period are asked to participate in the study.

Exclusion Criteria:

• Not speaking danish Not followed up at our institution Not mentally capable of filling out questionnaire

Data will be anonymized and openly shared with any who requests it, after study publication.