os lunatum
Definition
- Noun:
- One of the eight small wrist bones: The "os lunatum" is a specific carpal bone in the human wrist, named for its crescent-like shape. It is located in the proximal row of carpal bones, between the scaphoid and triquetrum bones.
Usage Examples
- Noun:
- A fracture of the os lunatum can cause significant wrist pain and instability.
- The surgeon carefully realigned the dislocated os lunatum during the procedure.
Advanced Usage
- "Lunate bone": This is the more common clinical and anatomical term for the "os lunatum".
- Avascular necrosis of the lunate bone is known as Kienböck's disease.
Variants and Related Words
- Lunate (adj/n): Crescent-shaped; often used as a shorter form for the lunate bone.
- The lunate is a key stabilizer of the wrist joint.
Synonyms
- Lunate bone: The standard synonym in medical terminology.
- Semilunar bone: An older, less common term referencing its half-moon shape.
Related Terms (Anatomical Context)
- Carpal bones: The group of eight bones that includes the os lunatum.
- Proximal carpal row: The row of carpal bones closest to the forearm, where the os lunatum is situated.
Noun
-
one of the eight small wrist bones
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