BoneShort bone
Trapezoid
Latin: Os trapezoideum sinistrum
Location: Hand — carpus
Paired structure: one on the left and one on the right side of the body.
View the trapezoid in 3DFunction
Wedge of the distal carpal row. The smallest distal-row bone, keying the second metacarpal's rigid base into the mid-carpal arch.
Landmarks
- Boot-shaped profile
- Dorsal wedge
Articulations (joints)
- Second metacarpal
- Scaphoid
- Trapezium
- Capitate
Clinical relevance
Isolated trapezoid fractures are exceptionally rare and nearly always accompany axial crush injuries of the second ray.
Educational anatomy reference, not medical advice. About this content.