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os triquetrum

os triquetrum

9.9
A small bone in the wrist that connects to the pisiform, hamate, and lunate bones
  • noun
  • /ˈɑs trɪˈkwɛtrəm/
  • Specialized
translation icon : hueso triquetrum
  • The ligament connects the os triquetrum to the pisiform and hamate bones.

Examples

  • The os triquetrum is one of the eight small bones of the wrist.

  • Injuries to the os triquetrum are relatively rare compared to other carpal bones.

  • The os triquetrum is one of the eight carpal bones.

  • In human anatomy, the os triquetrum connects with the pisiform.

  • Injuries to the os triquetrum are relatively rare compared to other carpal bones.

  • The os triquetrum is one of the eight small bones of the wrist.

  • The ligament connects the os triquetrum to the pisiform and hamate bones.

Synonyms

triquetrum
vsos triquetrum
  • Specialized
1 9.9

A small three-sided bone in the wrist near the little finger

is defined by the bones it connects rather than by shape
triquetral bone
vsos triquetrum
  • Specialized
9.3

A small wrist bone on the little finger side next to the lunate and pisiform bones

is described by its articulation with those three bones
cuneiform bone
vsos triquetrum
  • Specialized
9.1

A small bone in the wrist near the little finger

is the more neutral description focusing on joint connections
triquetral
vsos triquetrum
  • Specialized
9.9

A small bone in the wrist near the little finger that connects to other wrist bones

is the same but framed as a general anatomical label
pyramidal bone
vsos triquetrum
  • Specialized
7.5

Small wrist bone on the little-finger side that connects to the pisiform, hamate and lunate bones

is the standard modern description by its joint connections

Surface Forms

os triquetrum singular
os triquetra plural

Morphology

os + triquetrum

The phrase literally combines Latin 'os' (bone) with 'triquetrum' (the three-sided carpal bone), so a learner who knows both constituents can infer it refers to the triquetrum bone in the wrist. This is a directly compositional, technical naming pattern (common in anatomical terminology), making the meaning accessible to learners familiar with the parts.

Etymology

Os triquetrum comes from Latin words: os meaning 'bone' and triquetrum meaning 'three-cornered'. The name fits the small triangular wrist bone because it is shaped like a three-cornered piece and touches three nearby bones, so the word helps you remember its shape and place.