Heel pain and its causes

http://www.learningradiology.com/notes/bonenotes/stressfxcalcaneus.htm?fbclid=IwAR3_vhNIDzB7nuuNbPWC3FsXtPWnNvj3iX1TCNjjHUQLVExj95dNHhmx1Cc

Stress Fractures of the Calcaneus. JW Leabhart. The Journal of Bone and Joint Surgery; Vol L. 41-A, NO. 7, Oct 1959

Stress fracture on a conventional radiogram