1. Coughlin MJ. Sesamoids and accessory bones of the foot. In: Mann RA, Coughlin MJ, editors. Surgery of the foot and ankle. 8th ed. St. Louis: Mosby; 2007.
2. Sarrafian SK. Anatomy of the foot and ankle: descriptive, topographic, functional. 2nd ed. Philadelphia: Lippincott Williams & Wilkins;1993.
3. O'Rahilly R. A survey of carpal and tarsal anomalies. J Bone Joint Surg. 1953;35:626–42.
4. Ogden JA. Skeletal injury in the child. 3rd ed. Basel: Birkhäuser; 2000. p. 1094.
5. Pfitzner W. Beitrage zur Kenntniss des menschlichen Extremitatenskelets. VII. Die Variationen im Aufbau des Fusskelets. In: Schwalbe G, editor. Morphologische Arbeiten, vol 6. Jena: Fischer; 1896.