The surgical results of the acromioclavicular (AC) joint separation by sports were evaluated by using the AC score and the sports score. Additionally, the utility of both evaluation methods was examined. The results were excellent in both fresh cases and chronic cases after the surgery of the AC separation caused in sports, using the AC score and the sports score. The object, the treatment time point and surgical procedures influenced to the current AC score system. Especially, because an X-ray evaluation might be improper, improvement was required according to the surgical procedure. It was necessary to consider the importance of AC joint in each sport, when we used the sports score. We suggest that it was necessary to consider the patient's subjective evaluation and objective rating of the evaluation.
