This document discusses radiological imaging for assessing ACL repairs. It is divided into two parts - the first addresses normal post-ACL reconstruction appearances including common graft types, metalwork, and tunnel positions. The second part covers potential complications such as graft integrity issues, laxity when the graft is intact, arthrofibrosis, tunnel cysts, interference screw fluid, and synthetic ligament failure or infection. The document provides examples of MRI images showing intact and failed ACL grafts, graft laxity, arthrofibrosis, and other complications.