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Related Experiment Video

Updated: Jan 18, 2026

Author Spotlight: Double Posteromedial Approach for Treating Posterior Cruciate Ligament Cysts

Author Spotlight: Double Posteromedial Approach for Treating Posterior Cruciate Ligament Cysts

Published on: October 20, 2023

Inverted Cyclops Lesion Following Anterior Cruciate Ligament Repair: A Case Report.

Robin Litten¹, James Pate², Austin Hughes²

¹University of Tennessee College of Medicine, Memphis, Tennessee, United States.

Journal of Orthopaedic Case Reports

|September 12, 2025

Summary

This study reports the first case of an inverted cyclops lesion after anterior cruciate ligament (ACL) repair. Prompt recognition and surgical removal of this rare complication are crucial for restoring knee extension and function.

Area of Science:

Orthopedic Surgery
Sports Medicine
Biomedical Research

Background:

Cyclops lesions are a known complication after anterior cruciate ligament (ACL) reconstruction, typically presenting as fibrous nodules that restrict knee extension.

Keywords:

Anterior cruciate ligament repair inverted cyclops arthroscopy knee sports

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Inverted or femoral-sided cyclops lesions are a rare variant, previously described only after ACL reconstruction, not repair.