Podium Presentation Title: Operative Treatment of Acromioclavicular Injuries in the Military: Trends and Complications

To identify the demographics and characteristics of operative acromioclavicular joint separations, as well characterize reconstruction techniques associated complications. The United States Military Health System Data Repository was queried for patients with a Current Procedural Terminology (CPT) code coracoclavicular ligament between October 2013 March 2020. Patient demographics, radiology reports, clinical notes were reviewed to postoperative A total 956 reconstructions (896 primary repairs or reconstructions, 60 revision reconstructions) performed 896 indicated range separation severities: three grade two 392 48 four 386 5 separations; remaining 67 did not have definitive injury defined by treating surgeon. Of procedures, 356 acutely within 6 weeks injury, while 538 greater than after injury. Two hundred twenty eight procedures categorized repairs, 652 utilizing graft. Following these there 104 major complications requiring return operating room, including symptomatic failures revision, 18 fractures clavicle coracoid, 25 deep surgical site infections 9 cases hardware removal hardware, 4 adhesive capsulitis manipulation under anesthesia. There 160 minor complications, non-operative 16 superficial infections, 7 capsulitis, 57 neuropathy, 1 venous thrombosis, 74 persistent pain. no significant differences in complication rates grade, acute versus chronic treatment, repair reconstruction, suspensory non-suspensory technique. rate 1.8 per 100 person-years 2.77 person-years. overall 4.57 At conclusion care, service members necessitated medical from military. Coracoclavicular is relatively common safe procedure physically active population. person-years, our series Complications are rare, however, when they occur, frequently require one more secondary surgeries treat.