Figure 6
From: Anatomical study for elucidating the stabilization mechanism in the trapeziometacarpal joint
Histological analysis of the trapeziometacarpal joint. (a) Bone image showing the dissection levels (b) and (c) as white lines. (b) Axial section at the trapeziometacarpal joint level. Dorsal and radial joint capsules are shown as section marks and black arrowheads, respectively. (c): oblique sagittal section parallel to the fibrous orientation of the first dorsal interosseous (FDI) aponeurosis. The FDI aponeuroses are continuous with the dorsal joint capsule (white arrowheads). 2nd MC, second metacarpal bone; ECRL, extensor carpi radialis longus; EPB, extensor pollicis brevis; APL, abductor pollicis longus; OPP, opponens pollicis; FPB, flexor pollicis brevis; RA, radial artery; Add, adductor pollicis; EPL, extensor pollicis longus; Ulna, ulnar; Palm, palmar; Dist, distal; Dors, dorsal.
