Fibrocartilaginous Disc

A fibrocartilaginous disc, also known simply as a “disc,” is a type of cartilaginous structure found in certain joints of the body, including the knee joint of dogs.

These discs are composed of fibrous connective tissue (hence the term fibro) and cartilage. They serve to provide cushioning between bones, absorb shock, distribute forces, and stabilize the joint.

In the context of the knee joint, fibrocartilaginous discs are often referred to as menisci (singular meniscus). Dogs have two menisci in each knee joint, the medial meniscus and the lateral meniscus. These menisci sit between the femur (thigh bone) and the tibia (shin bone), acting as shock absorbers and contributing to joint stability.

Injuries to these fibrocartilaginous discs, such as tears or degeneration, can lead to pain, lameness, and reduced joint function in dogs. Treatment options for such injuries may include conservative management, such as rest and medication, or surgical interventions like meniscal repair or removal of the damaged portion (meniscectomy), depending on the severity and nature of the injury.