MR- arthrography: anatomic variant from link between lateral meniscus and anterior and posterior cruciate ligaments. A case report and review of the literature

Christian Ossola; Marta Duvia; Carmine Naccari Carlizzi; Eugenio Annibale Genovese

doi:10.1016/j.radcr.2021.07.012

MR- arthrography: anatomic variant from link between lateral meniscus and anterior and posterior cruciate ligaments. A case report and review of the literature

Radiol Case Rep. 2021 Aug 7;16(10):3012-3015. doi: 10.1016/j.radcr.2021.07.012. eCollection 2021 Oct.

Authors

Christian Ossola^{1

2}, Marta Duvia^{1

2}, Carmine Naccari Carlizzi³, Eugenio Annibale Genovese^{3

2}

Affiliations

¹ Diagnostic and Interventional Radiology Department, Circolo Hospital, Varese, Italy.
² Insubria University, Varese, Italy.
³ Columbus Clinic Center, Milano, Italy.

Abstract

Menisci congenital anomalies are rare morphologic abnormalities including accessory meniscus, discoid meniscus, double-layered meniscus, hypoplastic meniscus and ring-shaped meniscus (RSM). In a 35 year-old male patient, MR arthrography showed a bridging accessory bundle connecting the anterior cruciate ligament and posterior cruciate ligament with the posterior horn of the lateral meniscus. Arthroscopic examination showed a fan-like obstacle embracing the posterior horn of the lateral meniscus. It would be important to correctly identify this anatomical variant, because the bundle connecting the external meniscus to the ligaments of the central pivot can be misinterpreted as a meniscal fragment.

Keywords: ACL, anterior cruciate ligament; Knee; MR-arthrography and anatomical variants; MRI; MRI, magnetic resonance imaging; PCL, posterior cruciate ligament; RSM, ring-shaped meniscus.

Publication types

Case Reports