Case Report
Copyright ©The Author(s) 2023. Published by Baishideng Publishing Group Inc. All rights reserved.
World J Methodol. Sep 20, 2023; 13(4): 359-365
Published online Sep 20, 2023. doi: 10.5662/wjm.v13.i4.359
Clinical, imaging, arthroscopic, and histologic features of bilateral anteromedial meniscofemoral ligament: A case report
Juan Bautista Luco, Damian Di Memmo, Valentina Gomez Sicre, Tomas Ignacio Nicolino, Matias Costa-Paz, Juan Astoul, Ignacio Garcia-Mansilla
Juan Bautista Luco, Tomas Ignacio Nicolino, Matias Costa-Paz, Juan Astoul, Ignacio Garcia-Mansilla, Division of Knee, Department of Orthopaedics, Hospital Italiano de Buenos Aires, Buenos Aires 1181, Argentina
Damian Di Memmo, Department of Radiology, Hospital Italiano de Buenos Aires, Buenos Aires 1181, Argentina
Valentina Gomez Sicre, Department of Pathology, Hospital Italiano de Buenos Aires, Buenos Aires 1181, Argentina
Author contributions: Luco JB, Di Memmo D, Nicolino TI, and Garcia-Mansilla I designed the research study; Astou J and Costa-Paz M performed the research; Luco JB and Garcia-Mansilla I analyzed the data and wrote the manuscript; Gomez Sicre V performed the histopathologycal analisis; and all authors have read and approved the final manuscript.
Informed consent statement: Informed written consent was obtained from the patient for the publication of this report and any accompanying images.
Conflict-of-interest statement: All the authors report no relevant conflicts of interest for this article.
CARE Checklist (2016) statement: The authors have read the CARE Checklist (2016), and the manuscript was prepared and revised according to the CARE Checklist (2016).
Open-Access: This article is an open-access article that was selected by an in-house editor and fully peer-reviewed by external reviewers. It is distributed in accordance with the Creative Commons Attribution NonCommercial (CC BY-NC 4.0) license, which permits others to distribute, remix, adapt, build upon this work non-commercially, and license their derivative works on different terms, provided the original work is properly cited and the use is non-commercial. See: https://creativecommons.org/Licenses/by-nc/4.0/
Corresponding author: Ignacio Garcia-Mansilla, MD, Associate Specialist, Division of Knee, Department of Orthopaedics, Hospital Italiano de Buenos Aires, Peron 4190, Buenos Aires 1181, Argentina. ignaciogmansilla@gmail.com
Received: March 29, 2023
Peer-review started: March 29, 2023
First decision: June 12, 2023
Revised: July 2, 2023
Accepted: July 25, 2023
Article in press: July 25, 2023
Published online: September 20, 2023
Processing time: 175 Days and 6.8 Hours
Abstract
BACKGROUND

The anteromedial meniscofemoral ligament (AMMFL) is a very rare entity, commonly unrecognized and underreported. Although it was not proved to be a cause of anterior knee pain, concerns have been raised on the relationship between the presence of this structure and medial meniscus injury secondary to its abnormal motion. Regarding histologic examination, some studies have shown meniscus-like fibrocartilage, while others have identified it as ligament-like collagenous fibrous connective tissue.

CASE SUMMARY

We report the case of a 34-year-old ballerina with an AMMFL associated with a torn medial meniscus of both knees. Surgery was performed to treat the meniscal injury and two biopsies of each AMMFL were taken in different locations to define the histopathological composition. Histologic examination revealed fibrocartilaginous tissue compatible with meniscus. Follow-up evaluation one year after surgery evidenced full remission of symptoms and the patient had resumed her athletic activities.

CONCLUSION

Clinical, magnetic resonance imaging, arthroscopic, and histological features have been carefully described to better characterize the AMMFL.

Keywords: Meniscofemoral, Ligaments, Knee arthroscopy, Histology, Case report

Core Tip: The anteromedial meniscofemoral ligament (AMMFL) is a very rare entity, commonly unrecognized and underreported. Concerns have been raised on the relation between the presence of this structure and medial meniscus injury. Regarding histologic examination, some studies showed meniscus-like fibrocartilage, while others have identified it as ligament-like collagenous fibrous connective tissue. We report the case of a 34-year-old ballerina with an AMMFL associated with a torn medial meniscus of both knees. Surgery was performed to treat the meniscal injury and two biopsies of each AMMFL were taken in different locations to define the histopathological composition. Clinical, magnetic resonance imaging, arthroscopic, and histological features are carefully described to better characterize the AMMFL.