Related Experiment Video
Updated: Jul 8, 2025
Author Spotlight: Double Posteromedial Approach for Treating Posterior Cruciate Ligament Cysts
Published on: October 20, 2023
Recurrent cyclops lesion after primary anterior cruciate ligament reconstruction using bone tendon bone allograft: A
Grayson Kelmer1,2, Andrea H Johnson3, Justin J Turcotte1
1Orthopedic Research, Anne Arundel Medical Center, Annapolis, MD 21401, United States.
Background:
Cyclops lesions are a known complication of anterior cruciate ligament (ACL) reconstruction, with symptomatic cyclops syndrome occurring in up to 11% of surgeries. Recurrent cyclops lesions have been rarely documented; this case study documents the successful treatment of a recurrent cyclops lesion.
Case Summary:
A 28-year-old female presented following a non-contact injury to the right knee. Workup and clinical exam revealed an ACL tear, and arthroscopic reconstruction was performed. Two years later a cyclops lesion was discovered and removed via arthroscopic synovectomy. Seven months postoperatively, the patient presented with pain, stiffness, and difficulty achieving terminal extension. A smaller recurrent cyclops lesion was diagnosed, and a repeat synovectomy was performed. The patient recovered fully.
Conclusion:
To the best of our knowledge, this is the first documented case of recurrent cyclops lesion after bone-patellar tendon-bone allograft ACL reconstruction presenting as cyclops syndrome.
