Patellar Tendonitis, often referred to as "jumper's knee," is an overuse injury affecting the tendon connecting the kneecap (patella) to the shinbone (tibia). It typically occurs in athletes who engage in sports that involve repetitive jumping or running, leading to inflammation and pain in the knee. Symptoms of patellar tendonitis include pain around the kneecap, especially during activities like jumping, squatting, or climbing stairs. Treatment often involves rest, ice, and physical therapy to strengthen the surrounding muscles and improve flexibility, helping to alleviate symptoms and prevent further injury.