Figure 4.

Magnetic resonance imaging of the right wrist—(A and C) sagittal fat suppressed proton density (PD FS), (E and F) coronal PD FS, and (B and D) sagittal T1 images—showing bone marrow edema on opposing sides of the second carpometacarpal joint, predominantly involving the radial aspect of both trapezoid and base of the second metacarpal bones (yellow arrows). Imaging shows no evidence of periosteal reaction or low T1 fracture line (red arrows show only ill-defined edema), and findings are in keeping with a microtrabecular injury.