Which knee injury is associated with internal knee structure damage?

Meniscal injury is associated with internal knee structure damage because the meniscus plays a crucial role in the stability and functionality of the knee joint. The menisci are crescent-shaped cartilaginous structures that act as shock absorbers between the femur and tibia, providing cushioning and support during movement. They help distribute weight and reduce friction during knee motion.

When a meniscal injury occurs, it often results from a sudden twist or turn of the knee while bearing weight, which can lead to tears or damage to the meniscus. This type of injury can cause pain, swelling, and limited range of motion, directly affecting the knee's internal structures. Additionally, meniscal tears can lead to further complications, including joint instability and increased wear on other knee components, potentially contributing to conditions like osteoarthritis over time.

Other injuries mentioned, such as patellar tendinopathy, MCL injury, and osteoarthritis, while they may affect the knee, primarily involve different structures or aspects of knee function. Patellar tendinopathy impacts the patellar tendon, MCL injury concerns the collateral ligament on the inner side of the knee, and osteoarthritis primarily involves the degeneration of the joint cartilage rather than direct structural damage.