Histological incorporation of acellular dermal matrix in the failed superior capsule reconstruction of the shoulder.

Background: Superior capsule reconstruction addresses massive rotator cuff tears using allografts and aims to restore the natural superior constraint of the shoulder and therefore shoulder biomechanics and function. There is no evidence relating to the histological incorporation of these grafts.

Methods: 27 superior capsule reconstructions were performed between June 2016 and November 2017.