The purpose of this study is to show that high resolution ultrasonography has a growing and useful role as a diagnostic tool in the evaluation and assessment of ankle and foot injuries. A total of twenty cases with ankle or foot injuries were involved. In all cases, high resolution ultrasonography and MRI were performed. The study showed that high resolution ultrasonography had a high sensitivity and specificity (compared to MRI) in detecting ligament and tendon injuries of the ankle and foot.