Incidence and outcome of rupture of the Achilles tendon.

We determined the incidence of complete rupture of the Achilles tendon in the Maribor region (273,609 inhabitants) between 1991 and 1996. During this period, 116 ruptures were treated at Maribor Teaching Hospital. The average incidence was 7 ruptures per 100,000 inhabitants, with a peak incidence of almost 9 per 100,000. Most injuries (65%) occurred during sports activities, with soccer as the major cause of rupture. The average age of patients was 37 years with a male-to-female ratio of 18:1. All patients underwent open surgical repair of the ruptured Achilles tendon, with a minimum follow-up of two years. 19.8% of cases developed complications and in 10.4% of these the complications were major. 1.9% of patients sustained a re-rupture. The mean AOFAS score was 96 points. The patients were subjectively very satisfied with their treatment in 88% of cases. Good functional results with a return to the usual pre-injury activities were achieved in 96% of patients.