• Zhaoxun Pan, Hongxin Zhang, Chao Sun, Lianjun Qu, and Yan Cui.
• Department of Joint Surgery, The Eighty-Ninth Hospital of People's Liberation Army, Weifang, 261021, China, zxcscn@126.com.
• Arch Orthop Trauma Surg. 2015 Jan 1;135(1):9-16.

ObjectiveThe aim of this study was to evaluate the clinical outcomes of arthroscopy-assisted reconstruction of the coracoclavicular (CC) ligament using Endobutton for treating acromioclavicular (AC) joint dislocation.MethodsFrom March 2012 to May 2013, a total of 22 patients with fresh AC joint dislocation (Rockwood type III and type V) were treated with arthroscopy-assisted Endobutton reconstruction of the CC ligament. The regular post-operation follow-up was performed. Shoulder joint function was assessed with Constant-Murley scores. Postoperative efficacy of the surgery was evaluated using the Karlsson criterion.ResultsThe 22 patients were followed postoperatively for an average of 24 months (16-31 months). Among them, 20 patients achieved good functional recovery with no pain. Two patients had slight pain in the acromion during shoulder joint motion with limited abduction at 3 months, both of whom had recovered at 6 months. Radiography confirmed anatomical reduction of the AC joint in all patients. At 1 year, the Constant-Murley scores were 93.1 ± 2.4 points on the injured side versus 94.2 ± 2.7 points on the uninjured side. The difference did not reach statistical significance (P > 0.05). Postoperative Karlsson evaluation ranked 20 patients (90.9 %) as grade A and 2 as grade B (9.1 %) at the 3-month follow-up. All patients had become grade A at 6 months. None of the patients had brachial plexus or peripheral vascular injuries.ConclusionArthroscopy-assisted reconstruction of the coracoclavicular ligament by Endobutton fixation is a safe, easy method for treating AC joint dislocation. It provides reliable fixation, causes little trauma, and has a fast recovery.

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