The value of CT in diagnosing postoperative lumbar conditions.

A series of 15 postlumbar laminectomy patients was investigated for residual disease. Clinical, myelograpic, and CT correlation was studied. With the assistance of contrast material injections, a "fibrographic effect" was obtained in scar tissue, differentiating it from residual disc material. The viability of free fat graft is detectable with CT technique.