Sternoclavicular joint dislocation is relatively uncommon. Although there are many surgical techniques to manage this problem, no technique is obviously better than the others. Herein, we report a case of anterior dislocation of the sternoclavicular joint after a traffic accident in a 40-year-old man. This dislocation was successfully treated by fixation of a DePuySynthes clavicular hook plate fixation. The patient’s pain clearly subsided after the operation. He was immobilized with a sling for four weeks. At four months, the results remained good. As we discuss this case, we present this new technique for treating sternoclavicular joint dislocation, using the traditional acromioclavicular hook plate. Compared to other surgical approaches, this technique had some advantages, including an easily accessible implantation and a relatively simple and safe technique.