Materials and methods
rupture
The study was approved by the Danish ethical committee (1-10-72-324-15) and registered at clinicaltrial.gov (NCT02680821). The study was a randomized controlled trial performed at two departments that serve as referral centers for ACL revision patients. Enrollment and surgery were performed by senior surgeons between March 2016 and September 2019. ACL graft rupture was diagnosed by clinical examination and MRI. Inclusion criteria were patients between 18 and 50 years of age with an ACL-deficient knee and scheduled for first-time ACL revision were included. Exclusion criteria were language barriers and concomitant instability of the collateral ligaments or the posterior cruciate ligament.