Dislocation of the patella generally results from a traumatic event.1–9 It is most commonly due to a direct blow to the flexed knee. It may also occur from a forceful quadriceps contraction while the femur is internally rotated on the tibia. Many patients may not notice the dislocation as it may spontaneously reduce immediately after the injury. There are numerous theories as to the predisposition, if any, to a patella dislocation.1,2 These include adolescents, females, flat intercondylar groove, joint laxity, “knock-knees” or genu valgus, large Q-angles, obesity, and vastus medialis muscle atrophy. This condition is most commonly seen in adolescents and females.