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| - Arthroscopic assessment of the chronic unstable ankle joint
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| - Abstract. The purpose of this study was to evaluate prospectively the findings during arthroscopy in patients with chronic instability of the ankle joint. One hundred and ten consecutive patients who had suffered at least two ankle sprains and were symptomatic for at least 6 months were included in this study. A complete rupture of the anterior talofibular ligament was found in 64%, of the calcancofibular ligament in 41% and of the deltoid ligament in 6%. Cartilage lesions of the talus were seen in 54% of the joints, more of them medial (56%) than lateral (15%) or ventral (20%). Other frequently observed findings were synovialitis (38%), rupture of the syndesmosis (7%), and ventral scarring (6%). While cartilage damage was found independently of the lateral ligament injuries, all complete tears of the deltoid ligament were associated with cartilage injury of the talus. Medial instability was assessed in five ankles clinically and found arthroscopically in 23 ankle joints. Our arthroscopic findings show that chronic instability of the ankle joint is associated with various pathological conditions of ligaments, capsule and cartilage. It can therefore give essential information about the status of the chronic unstable joint with regard to the choice of operative or conservative treatment.
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