Knee pain is a common issue that can affect people of all ages, ranging from mild discomfort to severe, disabling pain. The knee is a complex joint that involves bones, ligaments, tendons, and cartilage, and pain can arise from any of these structures due to injury, overuse, or degenerative conditions.

One of the most frequent causes of knee pain is osteoarthritis, a degenerative condition where the cartilage that cushions the joint wears down over time, leading to pain, stiffness, and swelling. Another common cause is ligament injuries, such as an anterior cruciate ligament (ACL) tear, which often occurs during sports or activities involving sudden stops or twists. Meniscal tears, which involve damage to the cartilage in the knee, can also cause pain, swelling, and limited movement.

Knee pain can be localized to the front, back, or sides of the joint, depending on the cause. It may be accompanied by swelling, warmth, bruising, or a popping sensation. Pain can worsen with movement, especially activities like walking, climbing stairs, or squatting.

Treatment for knee pain typically involves rest, ice, anti-inflammatory medications, and physical therapy. In more severe cases, interventions like corticosteroid injections or surgery may be necessary. Preventative measures such as maintaining a healthy weight, strengthening leg muscles, and using proper technique during physical activities can help reduce the risk of knee pain.