Fig. 1A—20-year-old male military trainee with intermittent right
lower extremity claudication that occurs with running. Lateral knee radiograph
shows sessile osseous mass arising from posterior aspect of right femur.
Fig. 1B—20-year-old male military trainee with intermittent right
lower extremity claudication that occurs with running. Sagittal gradient-echo
MR image shows that the mass is composed of cortical and medullary bone which
is continous with the cortex and medullary trabecula of the femur from which
it arises. The mass is covered by a high-signal-intensity cartilaginous
cap.
Fig. 1C—20-year-old male military trainee with intermittent right
lower extremity claudication that occurs with running. Axial fat-suppressed
T2-weighted MR image shows posterior displacement and compression of distal
superficial femoral artery (arrow) and distal superficial femoral
vein (arrowhead) by osseous mass.
Fig. 1D—20-year-old male military trainee with intermittent right
lower extremity claudication that occurs with running. Lateral view of right
lower extremity digital arteriogram shows posterior displacement and near
occlusion of distal superficial femoral artery by the mass.