sesamoeides = like grains of sesame; of small bones formed inside tendons (Galen, c. 180 AD).
Fracture of the sesamoid bone. Fractures can be small chips or involve the entire bone. Surgical repair is often done by arthroscopy.
A bone formed in a tendon. Example are the patella and baculum (os penis).
Sesamoid bones are located at the back of the fetlock, the joint formed by the pastern bone and the cannon bone.