Figure 4

Multiplanar CT of the right elbow joint. A. Axial view showing a complex joint effusion (arrowed) and soft tissue swelling adjacent to the elbow. B. Axial slice through the proximal forearm, demonstrating the joint effusion surrounding the radial head (solid arrow) and increased soft tissue density involving the medullary shaft of the ulna (dashed arrow). C. Sagittal bone targeted reconstruction, showing subtle cortical erosions (arrowed) of the proximal ulna. D. Sagittal soft tissue reconstruction, demonstrating increased soft tissue density (arrowed) of the medullary shaft of the proximal ulna.