PURPOSE: To evaluate the effectiveness of a mini T-plate fixation in clavicle lateral end fractures. MATERIALS AND METHODS: We reviewed eleven cases of calvicle lateral end fracture which were treated with open reduction and internal fixion with mini T-plate from May 2000 to December 2004. The follow up period was 12 months minimum. The radiologic result, pain and shoulder function were evaluated by the ASES shoulder score. RESULTS: All cases showed satisfactory results. Seven cases (63%) were excellent, and four (37%) cases were good. There were no fair or poor results. All cases showed radiologic union by the fifteenth week. No complications such as metal breakage, limited motion, infections were seen. CONCLUSION: This study demonstrates that using a mini T-plate fixation which is easy and induces no injury of acromiocalvicular joint, contributes to provide stable fixation in clavicle lateral end fractures.