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Functional results of surgical treatment for acromioclavicular joint dislocation using the modified weaver-dunn surgical technique

MOJ Orthopedics & Rheumatology
Jonatas Brito de Alencar Neto,1 Clodoaldo José Duarte de Souza,1 Marcel Rolim Queiroz,2 Fernando Antônio Mendes Façanha Filho,1 Márcio Bezerra Gadelha Lopes,1 Marcos Antônio Silva Girão,1 Maria Luzete Costa Cavalcante,3 Luiz Holanda Pinto Neto1


Objective: To evaluate the functional outcome of patients who underwent surgical treatment using the modified Weaver-Dunn technique for the treatment of acute acromioclavicular dislocation.

Method: Retrospective case series study (level of evidence IV) based on their view of medical records of 20 patients who participated in a 25-week postoperative follow-up, in which they were assessed using the UCLA score and submitted to radiological control. This follow-up was due to surgical treatment for acromioclavicular dislocation using the modified Weaver-Dunn technique, with two 5.5mm-Peek Zip® anchors fixed to the coracoid process, with ties on the clavicle, and transfer of the coracoacromial ligament to the distal clavicle.

Results: The patients were followed-up for 25 weeks, and all presented satisfactory functional results, with 70% considered excellent and 30% classified as good. However, a high rate of reduction loss of the acromioclavicular joint was observed, which corresponded to 6 of the 20 cases monitored. The average time before returning to routine activities was 20.7 weeks; the shortest was 16 weeks, and the longest, 30 weeks.

Conclusion: In the present study, we found that all patients who were submitted to the described technique presented a low level of morbidity and satisfactory functional results (excellent and good), successfully returning to their everyday activities.


acromioclavicular joint, joint dislocations, rehabilitation, Rockwood classification, surgery, automobile accidents, coracoacromial ligament, aid of ties, tertiary referral hospital, traumatology service, retrospective study, Ellman criteria, satisfaction criterium, self-assessment