Arthroscopically Assisted Acromioclavicular Joint Reconstruction Using the Infinity-Lock Button System With Allograft Augmentation

Abstract

Acromioclavicular (AC) joint injuries are extremely common in the athletic population. Although most low-grade injuries can be managed nonoperatively, high-grade injuries often require reconstruction of the AC joint. Various reconstructive options have been described with varying risks and benefits to each. Implant or graft failure with loss of reduction as well as clavicle and coracoid fracture are a few of the more common complications following AC joint reconstruction surgery. Currently, no gold standard exists. This technical paper describes an arthroscopically assisted AC joint reconstruction technique using the Infinity-Lock Button System with hamstring allograft augmentation. This technique provides an anatomic, minimally invasive, low-profile reconstruction that may minimize risk of clavicle and coracoid fracture. It also provides augmented stabilization across the AC joint, which may also help resist naturally occurring horizontal and rotational displacing forces.

Treatment of Acromioclavicular Joint Instability With a Tunnel-Free Reconstruction Technique

“…Several new variations have been described using a combination of suspensory fixation, allograft augmentation and/or lower profile implants. 10 , 11 , 12 , 13 , 14 However, all of these recently published techniques still require at least one bony tunnel to be drilled in either the clavicle or the coracoid.…”

Acromioclavicular Joint Reconstruction with Recessed Clavicular Implant Technique Guide

“…4,5 As a result, several recently developed arthroscopic techniques focus on the use of augmentation to AC fixation, specifically semitendinosus allografts. [19][20][21] One of the benefits of using biologic augmentation includes improved biomechanical integrity because of the scaffolding properties of the graft, including secondary vascularization, which encourage healing and longevity of the repair. 22,23 Aliberti et al 19 described a technique using a semitendinosus allograft to augment the horizontal stability of the AC joint using an interference screw for fixation.…”