Cyclops Lesion Without ACL Reconstruction: A Rare Case in a Patient with Intact Anterior Cruciate Ligament and Tibial Plateau Fracture

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DOI: 10.23880/crij-16000231

Volume 9, Issue 2

Abstract

Cyclops lesions are most commonly seen after anterior cruciate ligament (ACL) reconstruction and are known to cause anterior knee pain and mechanical loss of extension. However, they are rarely reported in patients with ACL injuries that were not surgically reconstructed, and exceptionally rare in knees with intact ACLs. We present the case of a 42-year-old male with post-traumatic knee stiffness and pain, who was found to have a cyclops lesion despite no history of ACL reconstruction or complete tear. This case adds to the extremely limited literature on non-operative, intact-ACL-associated cyclops lesions.

Keywords: Cyclops lesion; Anterior cruciate ligament; ACL reconstruction; Musculoskeletal radiology; Arthrofibrosis

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