Abstract: ［Abstract］ Objective〖HTSS〗〓To investigate the effect of combined application of digital technology and arthroscopy in the treatment of acromion syndrome.
〖HTH〗〖WTHZ〗Methods〖HTSS〗〓The hospitalized patients diagnosed as shoulderimpact syndrome were selected as the study subjects. The DICOM file of CT examination was used before operation to make threedimensional shape in digital software MIMICS 14.0, and it was necessary to simulate the arthroscopy operation for osteophytes. In addition to surgery, guiding surgery， preoperative and postoperative followup were performed using Visual Analogue Scale(VAS) score, University of California at Los Angeles(UCLA) rotator cuff score, and ConstantMurley Shoulder Joint(CMS) score for pain and functional assessment.
〖HTH〗〖WTHZ〗Results〖HTSS〗〓The VAS scores of 3 months after operation, 6 months after operation and 1 year after operation were lower than those before and 1 week after operation. The VAS scores of 6 months after operation and 1 year after operation were lower than 3 cases after operation. The differences were statistically significant(P＜005). The total UCLA score, pain score, functional score, flexion angle score and posterior flexion angle score were higher than those before surgery, and the difference was statistically significant(P＜005). Postoperative pain, daily living activities, active range of activity, and muscle strength were all higher than before surgery, and the difference was statistically significant(P＜005).
〖HTH〗〖WTHZ〗Conclusion〖HTSS〗〓Acromion impingement syndrome is a common cause of shoulder pain and dysfunction. Arthroscopic osteophyte removal and acromioplasty are effective methods.

Key words: shoulder impingement syndrome, arthroscopy, imaging,threedimensional