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  • Title: Clinical outcomes of a single-tunnel technique for coracoclavicular and acromioclavicular ligament reconstruction.
    Author: Banffy MB, van Eck CF, ElAttrache NS.
    Journal: J Shoulder Elbow Surg; 2018 Jun; 27(6S):S70-S75. PubMed ID: 29307671.
    Abstract:
    BACKGROUND: A large number of surgical techniques have been described to treat acromioclavicular (AC) joint separations. Despite the high success rates with double-tunnel reconstruction, this method has been associated with the risk of coracoid and clavicle fractures. This study aimed to evaluate the outcomes of the first cohort of patients who underwent single-tunnel AC and coracoclavicular (CC) ligament reconstruction. It was hypothesized that this technique would result in maintenance of reduction and a minimal risk of fracture of the coracoid and clavicle. METHODS: All patients who underwent single-tunnel AC joint reconstruction between 2012 and 2015 via the technique with 2-year follow-up were included. Objective outcomes recorded were maintenance of reduction as measured by the CC distance on radiographs, shoulder range of motion, strength, return to sports, and complications. Subjective outcomes included maintenance of reduction on visual inspection and various patient-reported outcomes. RESULTS: Seventeen patients were included with a mean age of 41 ± 12 years. Separation types included types III, IV, and V. The mean follow-up period was 29 ± 9 months (range, 16-45 months). The CC distance improved from 37.4 to 30.0 mm on plain radiographs (P = .006), the American Shoulder and Elbow Surgeons score improved from 67.0 to 90.1 (P = .094), and the Single Assessment Numeric Evaluation score improved from 30.5 to 91.1 (P = .025). Reduction on visual inspection was maintained in 16 patients (94.1%). Regarding sports participation, 14 patients (82.4%) returned to their preinjury level. The most common complication was a prominent suture knot stack, occurring in 3 patients (17.6%), which was removed in all 3 in a second procedure. There were no clavicle or coracoid fractures. CONCLUSION: The described technique results in satisfactory objective and patient-reported outcomes and return to sports while avoiding coracoid and clavicle fractures.
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