trapezium bone
Học thuậtThân thiện
Definition
- Noun:
- A carpal bone in the wrist: The trapezium bone is one of the eight small carpal bones that make up the wrist. It is located on the radial side (thumb side) of the hand.
- A bone with specific articulations: It is distinguished by its articulations (joint connections) with the first metacarpal bone (the bone supporting the thumb) and the second metacarpal bone (the bone supporting the index finger).
Usage Examples
- Noun:
- Arthritis in the trapezium bone can cause significant pain at the base of the thumb.
- The surgeon carefully realigned the fractured trapezium bone.
- The trapezium bone is crucial for thumb mobility.
Advanced Usage
- Anatomical context: In detailed anatomical descriptions, the trapezium bone is often discussed in relation to the "trapeziometacarpal joint," which is the joint between the trapezium and the first metacarpal, responsible for thumb opposition.
- Osteoarthritis commonly affects the trapeziometacarpal joint.
Variants and Related Words
- Trapezium (noun): This is the standard and full term for the bone. In anatomical contexts, "trapezium" and "trapezium bone" are synonymous.
- Greater multangular bone (noun): This is an older, less common synonym for the trapezium bone.
- Trapezoid bone (noun): A different, adjacent carpal bone. It is important not to confuse the trapezium with the trapezoid bone.
Synonyms
- Trapezium (noun): The primary synonym.
- Greater multangular bone (noun): A historical synonym.
Related Anatomical Terms (Not Phrasal Verbs)
- Carpal bones (noun phrase): The group of eight bones in the wrist, which includes the trapezium.
- First metacarpal (noun phrase): The long bone in the hand that connects to the trapezium and supports the thumb.
- Scaphoid bone (noun phrase): The carpal bone located next to the trapezium.
Noun
- the wrist bone on the thumb side of the hand that articulates with the 1st and 2nd metacarpals