Percutaneous Achilles tendon repair with the Dresden instrument. Clinical and MRI evaluation of 90 patients.

ABSTRACT

BACKGROUND: This study aims at evaluating a substantial number of patients treated with a percutaneous, paratenon preserving technique for Achilles tendon repair using three different incisions with clinical follow-up and magnetic resonance imaging (MRI). METHODS: Ninety patients with percutaneous Achilles tendon repair using the Dresden technique for acute rupture were evaluated. Fifteen patients were treated using a central approach, 15 patients using a posterolateral approach and the original posteromedial approach was used in 60 patients. All patients were followed clinically and with MRI after 1 and 6 months post-operatively. RESULTS: Using the standard posteromedial approach no complications were seen. With the central approach 4 (27%) wound healing problems were observed and with the posterolateral approach 2 (13%) sural nerve lesions occurred. One patient (1.1%) had a rerupture. MRI revealed an increased diameter at the rupture site and distal to it as well as an increasingly homogeneous signal over time. CONCLUSIONS: Percutaneous Achilles tendon repair with the Dresden technique yields excellent clinical results and a low complication rate. Modification of the original incision is discouraged.