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

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.