"FATAL Graft": A Diagnostic Algorithm for the Workup of Anterior Cruciate Ligament Reconstruction Graft Failure.

There are multiple etiologies for revision anterior cruciate ligament reconstruction (ACLR), including but not limited to infection, arthrofibrosis, and graft failure, which should be distinguished before revision ACLR. Graft failure occurs when the reconstructed ligament does not restore knee stability, and it includes both graft rupture and functional failure in the setting of an intact graft. The causes of graft failure following ACLR can be divided into surgeon-controllable factors (ie, tunnel position, graft choice, alignment) and patient-centric factors (ie, patient age, tissue quality from systemic disease or smoking, compliance/traumatic reruptures). The purpose of this review is to propose an organized, easy-to-remember algorithm for the workup of surgeon-controlled ACLR graft failure etiologies, represented by the acronym "FATAL Graft."