As winter slowly begins to thaw, many people take advantage of warmer temperatures and begin or return to an outdoor exercise routine. However, this enthusiasm for working out can have an unfortunate consequence: runner\u2019s knee. Technically known as patellofemoral pain, this problem doesn\u2019t just affect joggers.\nIn fact, it can develop in anyone who places stress on their knee cartilage, including people who play high-impact sports such as:\n\nFootball\nBasketball\nSoccer\nTennis\n\nRunner\u2019s knee can cause dull, aching pain under or behind the kneecap, swelling, and a popping or grinding sensation in the knee. These symptoms are most likely to occur when you\u2019re bending your knee while walking, squatting, kneeling, or running.\nIf your doctor has diagnosed you with runner\u2019s knee, he or she may recommend that you rest your knee and avoid activities that exacerbate pain. You can also try to ease pain and swelling by applying an ice pack and taking over-the-counter anti-inflammatory drugs such as ibuprofen. In some cases, you may need to wear a brace or other supportive device to help stabilize your knee and keep it from buckling. Depending on the severity of the problem, runner\u2019s knee may require surgery to correctly realign the kneecap.\nPreventing Runner\u2019s Knee\nRunner\u2019s knee can be painful\u2014and may be an unwelcome disruption to your exercise routine. The good news: there are things you can do to help reduce your risk of developing this problem and to prevent it from getting worse. Try these tips for protecting your knees, whether you\u2019re a serious athlete or simply a weekend warrior.\n\nEase into exercise. Be sure to warm up sufficiently before exercising and stretch your muscles after a workout.\nMix things up. You can guard against overuse by varying your exercise routine. Rather than running every day, for example, switch to a regimen that alternates running with swimming.\nGet the right gear. Purchase high-quality sneakers with good support and replace them once they become too worn. Some people have foot problems that predispose them to runner\u2019s knee. If this is true for you, your doctor may recommend orthotic shoe inserts.\nConsider your surroundings. You are more likely to develop runner\u2019s knee if you run or play sports on uneven or hard surfaces, such as hills, trails, concrete, or clay tennis courts. Try alternating surfaces as you train.\nDon\u2019t delay treatment. If you suspect that you have developed runner\u2019s knee or otherwise injured yourself, seek medical help immediately and rest your injury before resuming any exercise routine.\n\nFor more information on common running injuries, visit the UPMC Sports Medicine website. To schedule an appointment or for more information, call 1-855-93-SPORT (77678).