Characteristics of the Medial Meniscus

The medial meniscus has an open C-shaped structure with a larger radius of curvature compared to the lateral meniscus. It consists of an anterior horn and a posterior horn.
The posterior horn is wider than the anterior horn and attaches to the tibia just anterior to the posterior cruciate ligament (PCL). The anterior horn attaches to the tibia approximately 6–8 mm anterior to the anterior cruciate ligament (ACL).
The peripheral portion of the medial meniscus is firmly attached to the medial joint capsule and connects to the superior margin of the tibia through the coronary ligament.

Characteristics of the Lateral Meniscus

The lateral meniscus has a nearly closed C-shape and a smaller radius than the medial meniscus. It covers a larger portion of the superior surface of the tibia.
This meniscus is connected to the lateral joint capsule. Its anterior horn attaches to the anterior aspect of the intercondylar eminence, while the posterior horn attaches to the posterior aspect of the intercondylar eminence, anterior to the attachment of the posterior horn of the medial meniscus.