Patellar tendinitis, often referred to as "jumper's knee," is an injury that affects the patellar tendon, which connects the kneecap to the shinbone. This condition typically occurs due to repetitive stress or overuse, especially in athletes involved in sports that require jumping or running. Symptoms include pain and tenderness around the kneecap, particularly during physical activities. Treatment for patellar tendinitis usually involves rest, ice, and physical therapy to strengthen the surrounding muscles. In some cases, anti-inflammatory medications may be recommended to reduce pain and swelling. If conservative measures fail, more advanced interventions, such as injections or surgery, may be considered.