The Wrist Joint - Computational Biomechanics of the Wrist Joint - page 6

Table 1.1 (continued)

Bone Description

Trapezoid A relatively smaller bone namely the trapezoid, on the other hand is

articulated medially with the trapezium via a flat facet surface. On its
proximal side, the scaphoid is articulated through a slightly concave
surface whilst on its medial side, the capitate is articulated via a flat facet
surface. Distally, the second metacarpal is articulated via a convex
triangular surface [ 8 ]

Trapezium The trapezium is located between the first metacarpal distally and the

scaphoid proximally. For the articulation with the first metacarpal, it has a
saddle shaped distal articular surface

Fig. 1.4 The articular
cartilage which consists of
four existing layers:
superficial, intermediate,
deep and calcified [ 19 ]

plate stiffness do affect stresses and deformations in the adjacent articular carti-
lages. Overgrowth of the subchondral plate, known as bone boss [ 15 ], as well as
softening following either bone bruises [ 16 ] or degeneration [ 17 ] were commonly
detected in the wrist joint especially following subchondral hematomas in distal
radius fractures [ 18 ].