Which condition causes joint pain due to inflammation of a meniscus?

Meniscitis specifically refers to the inflammation of the meniscus, which is a C-shaped cartilage structure in the knee joint that provides cushioning and stability. When the meniscus becomes inflamed, it can lead to joint pain, swelling, and decreased mobility, as the condition directly impacts the functionality of the knee joint. This inflammation can occur due to injury, degeneration, or other factors that lead to irritation of this cartilage.

Tendinitis involves inflammation of the tendons, while arthritis is a broader category referring to joint inflammation that can affect various components of the joint, including cartilage, synovial membrane, and bone. Bursitis involves inflammation of the bursae, which are small fluid-filled sacs that cushion the joints. While these conditions can also cause joint pain, they do not specifically pertain to inflammation of the meniscus itself, making meniscitis the most relevant and accurate choice for this question.