sesamoid bone


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ses·a·moid bone

[TA]
a bone formed after birth in a tendon where it passes over a joint, for example, the patella.
Synonym(s): os sesamoideum [TA]

sesamoid bone

Etymology: Gk, sesamon, sesame, eidos, form
any one of numerous small round bony masses embedded in certain tendons that may be subjected to compression and tension. The largest sesamoid bone is the patella, which is embedded in the tendon of the quadriceps femoris at the knee.

sesamoid bone

(1) A bone located in the tendons of the flexor hallucis brevis on the plantar aspect of the foot, which help redistribute and attenuate force over the first metatarsal head during the toe-off portion of gait or propulsion.
(2) A membranous bone formed in a tendon in response to joint stress (e.g., patella).

ses·a·moid bone

(ses'ă-moyd bōn) [TA]
A bone formed after birth in a tendon where it passes over a joint (e.g., the patella).

sesamoid bone

A bone lying within a tendon to assist in its mechanical action and to bear pressure. The most conspicuous sesamoid bone is the knee cap (patella).
References in periodicals archive ?
Carter, "Coincident development of sesamoid bones and clues to their evolution," The Anatomical Record, vol.
Explanation for the lack of the distal sesamoid bone, the presence of a mobile distal scutum (which in the domestic ruminants covers intimately the palmar aspect of the distal sesamoid bone), and the extended attachment of the DDF tendon on the palmar aspect of the third phalanx can be interpreted in evaluation of the unique biomechanics of the llama.
The patella is an example of a sesamoid bone, as is the navicular bone, which is in the hoof of the horse at P3.
The leg broke in three places: a cannon bone above the ankle, a sesamoid bone behind the ankle, and a long pastern bone below the ankle.
Sesamoid bones are ovoid nodular bones, often small, found embedded within a tendon or joint capsule.
Possibly a sesamoid bone, the spur could function as muscle or ligament attachment site, or possibly for increased movements as limb length increases.
He smashed a sesamoid bone on the same foot as a foal and the vet who examined him today said he couldn't believe he was still racing.
The Tom Dascombe-trained executive Bay pulled up lame after finishing a well-beaten sixth of seven in a 1m1/2f handicap on August 7, with racecourse vets deciding to transport the three-yearold to a veterinary practice 22 miles from the course for an x-ray after diagnosing likely damage to the near-fore sesamoid bone.
Two Cases of Typical Osteochondropathy of the Medial Sesamoid Bone of the First Metatarsal.
Sesamoid bone fractures of metacarpophalangeal joint of thumb are very rare.
The os peroneum is a round or oval-shaped juxtaarticular sesamoid bone that lies within the confines of the peroneus longus tendon.