What Is Patellar Dislocation?
Patellar dislocation is an injury in which the patella, or kneecap, is forced away from its central position between the femur, or thighbone, and the bones of the lower leg. This injury is often sports-related and is most common among children and adolescents. It usually presents a number of symptoms, particularly pain and swelling. Treatment for patellar dislocation typically includes physical therapy and, in severe cases, surgery. Normally, the kneecap is suspended by tendons and ligaments over a cavity known as the patellofemoral groove, which is centrally located between the upper and lower leg. When the knee area is jarred or struck — a common occurrence in contact sports — the kneecap can be forced away from this groove, or dislocated. This abnormal motion can cause the ligaments which normally hold the kneecap in place to overstretch or even tear.
