Picture of trapezoid

Bone & Joint Structure: Carpals

The proximal surface of the trapezoid combines with the trapezium to form a concave surface for articulation with the convex distal articular surface of the scaphoid. The distal surface is convex and articulates with the second metacarpal. The medial surface articulates by a concave facet with the distal part of the capitate. The lateral surface is slightly convex to articulate with the trapezium.

 

Carpals | Metacarpals | Phalanges | Arches | Bone and Joint Structure | Help | Hand Kinesiology

Lorie Richards and Janice Loudon, October 1997