PURPOSE : This study was performed to compare the functional results according to the methods of internal fixation in olecranon fracture-dislocation. MATERIALS AND METHODS : Authors retrospectively analyzed in 13 adult patients with olecranon fracture-dislocation (Colton II D) who were treated by internal fixation from January 1991 to June 1998. Functional results were assessed by Broberg and Morrey system and radiographic results were analyzed in terms of articular step-off, articular gap and reduction loss. RESULTS : In regard to functional assessment, all oblique fractures treated with plate and screw showed 100% of satisfactory result whereas those treated with tension bands showed 33.4% of satisfactory result. Comminuted fractures treated with plate and screw showed 40% of satisfactory result whereas all two treated with tesion bands resulted in unsatisfactory result. In regard to radiologic assessment, three oblique fractures treated with plate and screw result whereas those treated with tension bands resulted in fair result. Comminuted fractures treated with plate and screw resulted in three fair, two poor radiologic results whereas those treated with tension bands resulted in one fair, one poor result. CONCLUSION : Plate and screw fixation can obtain more satisfactory functional and radiologic results than tension bands in oblique and comminuted olecranon fracture-dislocation