os sesamoideum
- noun
- /ˌɑs ˌsɛsəˈmɔɪdiəm/
- Specialized
:
hueso sesamoideo
- The surgeon pointed out the os sesamoideum embedded in the patient's thumb tendon.
Examples
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Damage to the os sesamoideum can result in pain and restricted movement of the joint.
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An X-ray of the big toe may reveal an os sesamoideum near the metatarsophalangeal joint.
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The os sesamoideum is small.
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Look at the os sesamoideum!
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An X-ray of the big toe may reveal an os sesamoideum near the metatarsophalangeal joint.
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Damage to the os sesamoideum can result in pain and restricted movement of the joint.
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The surgeon pointed out the os sesamoideum embedded in the patient's thumb tendon.
Synonyms
1
9.9
A small round bone inside a band that joins muscle to bone near a joint, like the kneecap
1
6.8
A small round bone that forms inside a tendon near a joint, like the kneecap
Surface Forms
Morphology
os + sesamoideum
The phrase literally combines 'os' (bone) with 'sesamoideum' (sesamoid-like), so a learner who knows both constituents could infer it denotes a type of bone, likely small or seed-shaped. However, the precise anatomical sense — a small round bone embedded in a tendon near a joint — is technical and relies on specialized biological usage and Latin morphology, so the full meaning is not fully predictable for a B1 learner.
Etymology
Os sesamoideum comes from Latin: os meaning 'bone' and sesamoideum meaning 'sesame seed'. These bones are small and round like a sesame seed and sit inside a tendon where it passes over a joint, so the name helps you remember they are tiny round bones in tendons near joints.