Patellofemoral pain syndrome affects the front part of your knee, including the area surrounding the kneecap. One in four cases of knee injury is diagnosed as runner’s knee or jumper’s knee, another name for patellofemoral pain syndrome. Adolescent girls and women younger than 60 are twice as likely as men to end up with this type of sports injury. https://www.thespineandrehabgroup.com/patellofemoral-pain-syndrome