Chondromalacia is a condition where the cartilage on the underside of the kneecap, or patella, becomes softened or damaged. This can lead to pain and discomfort, especially during activities like walking, running, or climbing stairs. It often occurs due to overuse, injury, or misalignment of the knee joint. Symptoms of chondromalacia include a grinding sensation in the knee, swelling, and stiffness. Treatment typically involves rest, physical therapy, and sometimes anti-inflammatory medications. In more severe cases, a doctor may recommend surgery to repair the damaged cartilage and restore proper function to the knee.