Clinical application of computerized axial tomography (CAT) scanning of calcaneus fractures.

CAT scanning of calcaneal fractures with the 30 degree coronal or the transverse plane provides useful information not available on conventional roentgenograms. Joint alignment, displacement of fragments, and the integrity of the medial wall are key factors in deciding whether surgical reconstruction is indicated and what surgical approach to use--medial, lateral, or both. Examples of such information obtained on eight patients with calcaneal fractures is reported comparing CAT scan results to conventional roentgenograms. CAT scans can be used also with the foot immobilized in a cast.