Ankle fracture treated with the AO principle--an experience with 116 cases.

One hundred and sixteen cases of ankle fractures were classified by the AO system and treated by open reduction and internal fixation in accordance with the AO principles. The stabilization of the lateral malleolus was emphasized. Ninety-six cases were available for functional assessment with an average follow-up of 39 months. The results were good or excellent in 90 per cent of type A fractures and in 70-80 per cent of type B and C fractures. There was no death or non-union. Local complications included wound infection (8.6 per cent) and skin necrosis (3 per cent). This study illustrates the importance of exact anatomical reduction and stable internal fixation to allow early movement after an intra-articular fracture of the ankle.