There is also a variable number of small sesamoid bones, commonly found in tendons.
From the en.wikipedia.org
The patella or kneecap on each side is an example of a larger sesamoid bone.
From the en.wikipedia.org
The horse fractured sesamoid bones in his right foreleg and was euthanized.
From the latimes.com
His final season ended in February when he fractured the sesamoid bone in his right foot.
From the washingtontimes.com
Track officials said he broke the sesamoid bone in his right front leg and was euthanized.
From the sportsillustrated.cnn.com
There is also commonly a sesamoid bone in distal portions of the second metacarpal bone.
From the en.wikipedia.org
The sesamoid bone is located inside a tendon near the big toe.
From the thenewstribune.com
Hot Danish had been there once before for a sesamoid operation.
From the smh.com.au
Keppinger will have a sesamoid bone in his left foot removed.
From the thenewstribune.com
More examples
Sesamoid bone: any of several small round bones formed in a tendon where it passes over a joint
In anatomy, a sesamoid bone is a bone embedded within a tendon.
(Sesamoids) Two small bones (medial and lateral) located above the fetlock.
Adjective, Greek sesamodes, eidos = shape or form; like grains of sesame, hence, small bone in tendon at site of friction.
Sesamoid bones are located at the back of the fetlock, the joint formed by the pastern bone and the cannon bone.
The pisiform is a sesamoid bone; the patella or kneecap another. By definition these bones form within tendons, usually where they pass across joints. The word is derived from the Greek and means resembling a sesame seed.
E.g. patella (knee cap, where the bone is free but a tendon runs through it)