Figure 16a. Axial anatomic slice (a) and axial T1-weighted MR image (b) obtained at a near level along the dorsum of the hand show the interosseous muscles (1), which are located in the intermetacarpal spaces. The lumbrical muscles (2) are located on the radial sides of the flexor digitorum profundus tendons. 3 = abductor digiti minimi, 4 = adductor pollicis.