Biomechanical Comparison of Arthroscopic Repairs for Acromioclavicular Joint Instability: Suture Button Systems Without Biological Augmentation.

Isolated reconstruction of the CC ligaments using single and double clavicular tunnel techniques results in a high load to failure for superior translation, which is equal to the native stability, and less translation in all 3 directions as well as higher superior stability when compared with the modified Weaver-Dunn procedure. A potential drawback is the risk of coracoid fracture, as the high load to failure of the device may exceed load to failure of cortical bone prior to device breakage. Clinical Relevance: Single clavicular tunnel arthroscopic reconstructions of the coracoacromial ligaments show good biomechanical results. Beitzel K, Obopilwe E, Chowaniec DM, Niver GE, Nowak MD, Hanypsiak BT, Guerra JJ, Arciero RA, Mazzocca AD. Am J Sports Med. 2011 Aug 12. [Epub ahead of print] PMID: 21841067 PDF