“…The rotational movements of PTFJ happen during the ankle movements, while the knee flexion fibular head moves forward [2,22]. According to the literature, a traumatic dislocation of PTFJ most frequently occurs during playing soccer [23], rarely volleyball [16], skiing [23], basketball [24], trampoline jumping [25], or it results from high-energy trauma as usually seen in polytraumatised patients [26], while it is an extremely rare traumatic dislocation as a result of congenital connective tissue weakness [27]. The ligament reinforcement produces stability in the extended knee, so the injuries of this joint generally occur during knee flexion.…”