Abstract
AimsTalonavicular (TN) arthrodesis is a common procedure to treat arthritis of the TN joint.It can also form part of a wider triple fusion to restore the architecture of the foot.Traditional methods of arthrodesis are not universally successful. The aim of this study was to evaluate the clinical and radiological outcomes of those who had a TN fusion using the IOFiX system.Data was collected retrospectively from the hospital operation database. Inclusion criteria included patients who underwent a TN fusion between 2012 and 19 with the IOFiX system. All patients were over 16 years of age and at least one year post operation.Patient demographics were obtained, as well as rate of union and rate of re-operation for analysis. Results35 patients were identified. The mean age was 58 years (range 34–85). The most common indication was osteoarthritis of the TN joint (n = 19), followed by acquired adult flat foot (n = 8), rheumatoid arthritis (n = 3), avascular necrosis (n = 2) and a previous nonunion.(n = 1). 9 % (n = 3) of patients did not achieve union by one year and 14 % (n = 5) required another operation subsequent to their initial surgery: four to remove metalwork, and one to treat non-union of the arthrodesis. The use of bone graft did not affect complication rates. TN fusion, when performed as part of a triple fusion, showed a tendency for reducing the rate of non-union, however this did not achieve statical significance. ConclusionThis study suggests that the IOFiX system offers a reliable and acceptable alternative technique for patients undergoing a TN fusion. Further work is required to assess if early signs of improved outcome when used in triple fusion, over isolated TN fusion,are significant.
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