Figure 1
From: Anatomical study for elucidating the stabilization mechanism in the trapeziometacarpal joint
Bone morphology of the trapeziometacarpal joint. Three-dimensional (3D) computed tomography images and actual bone images of the dorsal (a and b) and radial aspects (c and d) of the trapezium (Tm) and the first metacarpal bones of the right thumb. (a) the Tm is prominent (black circle) on the radial side of the dorsal aspect. (b) the actual bone images of (a). (c,d) 3D images and actual bone images of the radial aspect of the trapeziometacarpal joint, respectively. The double-dagger shows the radial roof of the flexor carpi radialis tendon groove. Dist, distal; Ulna, ulnar; Dors, dorsal; Palm, palmar.
