sesamoid bone

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sesamoid bone

[′ses·ə‚mȯid ‚bōn]
(medicine)
A small bone developed in a tendon subjected to much pressure.
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References in periodicals archive ?
The frequency of partite sesamoids of the first metatarsophalangeal joint.
Both radiography and computed tomography may demonstrate displacement of the os peroneum from its usual position, fracture, or diastasis of a bipartite sesamoid.
1) The hallucal sesamoids are 2 small bones located underneath the head of the first metatarsal and encased within the flexor hallucus brevis tendon that disperses weight from the head of the first metatarsal during the push-off portion of gait.
The lesser metatarsal sesamoids are anatomic variants that appear to be embedded in the plantar aspect of the Metatarsophalangeal joint capsule.
Subluxation of the sesamoids occurs in later stages of the deformity; in actuality, there is no true sesamoid subluxation but rather a medial deviation of the first metatarsal relative to the sesamoid complex.
He suggested that these represented preexisting sesamoid bones [26].
From the lower part of the sesamoids, bands of ligaments pass downward and attach to the backs of the long and short pastern bones.
He suffered an open fracture of the cannonbone in the right front fetlock joint and also fractured both sesamoids George Washington won six of his 14 races, including four at the highest level, and accrued prize-money in excess of pounds 800,000.
We discuss some of the more commonly symptomatic bones, namely the os acromiale, os styloideum, metacarpal and hallux sesamoids, patella, os trigonum, os calcaneus secundarius, accessory navicular, os peroneum, and os intermetatarseum.
The functional significance of sesamoids in general is not well understood (Broek van den & Barents, 1947; Mottershead, 1988).
The tendons of the medial and lateral heads of the FHB insert onto the medial and lateral sesamoids, respectively.
Early Ronan, a filly trained by Gary Stute, fractured sesamoids in her left foreleg while working out on the main track.