One hundred and four cases of the ankle fracture have been treated and managed in the Depart￢ment of Orthopaedic Surgery, Catholic Medical College Hospital. During the period from January, 1968 to December, 1971. 104 patients were analyzed clinically and the results obtained were as follow.
1. The causes of ankle fractures were mostly due to traffic accident ´49.9%´ and direct blow ´30.7%´.
2. The incidence of trauma was in the young man, most frequent in the 3rd decade.
3. In classification of Lauge-Hansen, the type of pronation-external rotation is most common type
in this series and the stage 8I of pronation-external rotation is more common than other stages. 4. The average duration of cast immobilization is 8.8 weeks after closed reduction performed but
duration of cast immobilization is shorter after open reduction of cast immobilization.
5. Anatomical reduction was obtained in 64 patients ´61.5%´ with good objective clinical results
in 54 patients ´51.9%´.
6. The quality of clinical results depends mostly on the accuracy of the reduction, to a lesser extent on the degree of initial displacements, and least on the type of fracture.
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