Medical Imaging

Lateral view and AP view.

Chip fracture from talus. Note the small triangular fleck of bone lifted from the superior surface of the neck of the talus just proximal to the talo-navicular joint. This is commonly seen as a small fragment of bone with cortex all around or as a small projecting exostosis. In either case, it probably represents the appearance of an old fracture in this region.
The present film represents the appearance of the recent fracture which is not very often seen. It is probably due to pull of ligaments around the talo-navicular joint.

The image to the left is of a slipped capital femoral epiphysis in a child. The image to the right is after fixation. [Courtesy of Dr. Tim Dowdell, St. Michael’s Hospital, Department of Medical Imaging]

Rheumatoid arthritis erosions, joint space narrowing, and subluxations can be seen in this x-ray. [Courtesy of Dr. N. Jaffer]

Avulsion fracture of the medial malleolus (left). Normal shown (right) for comparison.