Slope independently predicts symptomatic cyclops after primary ACLR

Cyclops lesions are a common cause of extension loss after ACL reconstruction (ACLR). MRI incidence for cyclops lesions within 1 year of ACLR is up to 47%. Literature suggests that female sex, narrow notch, large grafts, and meniscus repair are risk factors. However, it is unclear whether graft type, extraneous tissue, “notch-overstuffing”, or slope are risk factors for cyclops syndrome. A unifying multivariate model for cyclops risk analysis is lacking. We found using a large retrospective database that high tibial slope independently predicts clinically-significant cyclops following primary ACLR.