ReviewOrthopaedic journal of sports medicine2020
Cyclops Lesions of the Knee: A Narrative Review of the Literature.
Review in Orthopaedic journal of sports medicine, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 26 papers, 1 of them a synthesis that pooled it.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
26 citing papers in PubMed, 1 synthesis or guideline pooled it.
- Remnant Preservation in Anterior Cruciate Ligament Reconstruction Versus Non-Preservation Methods: A Systematic Review and Meta-Analysis.Orthopaedic surgery · 2025Pooled it
- The addition of a lateral extra-articular procedure to a primary anterior cruciate ligament reconstruction is associated with an increased rate of further surgery for cyclops lesions and restricted range of motion.Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 2026Article
- Age-Related Increases in Graft Tendon Size and Stiffness During Skeletal Growth Enhance Anterior Cruciate Ligament Graft Function and Joint Stability in an Early Adolescent Porcine Model.Journal of biomechanical engineering · 2026Article
- Inverted Cyclops Lesion Following Anterior Cruciate Ligament Repair: A Case Report.Journal of orthopaedic case reports · 2025Article
- Anterior Cruciate Ligament Reconstruction With Bone-Patellar Tendon-Bone Autograft: Top 10 Pearls.Arthroscopy techniques · 2025Article
- All-Arthroscopic Anterior and Posterior Arthrolysis for Extension Deficit After Anterior Cruciate Ligament Reconstruction.Arthroscopy techniques · 2025Article
- No Differences in Graft Failure After Anterior Cruciate Ligament Reconstruction With Suture Tape Augmentation in Adolescents.Arthroscopy, sports medicine, and rehabilitation · 2025Article
- Arthroscopic Anterior Cyclops Lesion Excision After Autograft Quadriceps Anterior Cruciate Ligament Reconstruction: Technical Note and Review of Literature.Arthroscopy techniques · 2025Article
- Recurrence of Cyclops Syndrome After Initial Arthrolysis: Characteristics and Risk Factors After ACL Reconstruction.Orthopaedic journal of sports medicine · 2025Article
- Effect of Remnant Continuity on Postoperative Outcomes After Remnant Tensioning Anterior Cruciate Ligament Reconstruction in Respect to Clinical, Radiological, and Second-Look Arthroscopic Criteria.Orthopaedic journal of sports medicine · 2025Article
- How Does a Cyclops Lesion Impact Anterior Cruciate Ligament (ACL) Reconstruction Recovery?Cureus · 2025Article
- Comparison of Arthrofibrosis After ACL Reconstruction According to Graft Choice: Quadriceps Tendon Versus Bone-Patellar Tendon-Bone Autograft.Orthopaedic journal of sports medicine · 2025Article
- MRI sequences at different degrees of flexion to investigate knee popping: an unusual way to diagnose an isolated pigmented villonodular synovitis lesion.Skeletal radiology · 2024Article
- Recurrent cyclops lesion after primary resection of fibroreactive nodule following anterior cruciate ligament reconstruction.World journal of orthopedics · 2024Article
- Magnetic Resonance Imaging of Cyclops Lesion in Patients With Non-reconstructed Anterior Cruciate Ligament.Cureus · 2024Article
- Cyclops syndrome following anterior cruciate ligament reconstruction: Can relapse occur after surgery?World journal of orthopedics · 2024Article
- Recurrent cyclops lesion after primary anterior cruciate ligament reconstruction using bone tendon bone allograft: A case report.World journal of orthopedics · 2023Article
- Risk Factors for Symptomatic Cyclops Lesion Formation after Anterior Cruciate Ligament Reconstruction.Revista brasileira de ortopedia · 2023Article
- Bone-patellar tendon-bone autograft and female sex are associated with the presence of cyclops lesions and syndrome after anterior cruciate ligament reconstruction.Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 2023Article
- Histological and clinical analysis of knee cyclops lesions.Acta bio-medica : Atenei Parmensis · 2023Article
Corrections and comments
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Authors and funding
4 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Cyclops lesion is a known complication of anterior cruciate ligament reconstruction (ACLR). Although the incidence of cyclops lesion appears to be decreasing, it remains an important cause of restriction of extension after ACLR. We reviewed the available literature regarding the cyclops lesion and syndrome and cyclops-like lesions to analyze available evidence on cyclops lesions and variants of cyclops lesions. A keyword search in PubMed, Scopus, Web of Science, and EMBASE, Ovid Medline, and Ovid journals provided 47 relevant articles in the English literature, which were used to create this review. We classified cyclops lesions based on clinical presentation, pathology, and location. Risk factors, management options, tips to reduce the condition, and controversies related to the condition have been discussed. Female sex, greater graft volume, bony avulsion injuries, excessively anterior tibial tunnel, double-bundle ACLR, and bicruciate-retaining arthroplasty appear to predispose patients to cyclops lesions. Cyclops syndrome is a cyclops lesion that causes a loss of terminal extension. Arthroscopic debridement is an effective treatment for cyclops syndrome, whereas cyclops lesions are usually managed conservatively. It is important to distinguish between cyclops lesion and cyclops syndrome, as management differs based on symptoms. Cyclops lesion is diagnosed using magnetic resonance imaging. The management of choice for symptomatic lesions is surgical excision. Outcomes after excision are very good, and recurrence is rare.
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