1. Fractures of the heel bones in early and prehistoric times;Wells C;Practitioner,1976
2. Coughlin MJ, Mann RA, Saltzman CL. Surgery of the Foot and Ankle. Eighth edition. St. Louis: Mosby Elsevier; 2007. Vol. II. Chapter 38.
3. The treatment of fractures of the os calcis;Conn HR;J Bone Joint Surg,1935
4. 12 Treatment of Late Complications After Os Calcis Fractures
5. Diagnosis, pathology and treatment of fractures of the os calcis;Böhler L;J Bone Joint Surg,1931