Background: Arthroscopic anterior cruciate ligament reconstruction (ACLR) with hamstring tendon (HT) autografts is very popular, and could result in knee flexion weakness and harvest-related morbidity. An alternative of constant diameter, with arguably reduced donor-site morbidity, has developed in the form of the peroneus longus tendon (PLT) at the expense of ankle function. Methods: It was a prospective randomized self-controlled study that was undertaken in a tertiary orthopaedic unit (2023-2