This fracture is the result of a plantar flexion injury, with pressure acting on the talus tuberosity from the posterior inferior lip of the tibia.The occurrence of this cartilage junction fracture is usually the result of an abrupt jump with the metatarsal or toe during basketball or tennis sports. Similarly, forcefully stepping backward into an empty chair can also cause it. Ballet dancers are more prone to this injury due to the elongation of the lateral tuberosity of the talus (Stieda process)..