Computed tomography in the postoperative lumbar spine

A retrospective review of computed tomograms (CT) was performed in eight patients who underwent surgery for presumed reherniation of a lumbar disc. The CT scan in the three patients with surgically proven extradural scarring and no disc herniation, demonstrated distinct characteristics of perineural fibrosis which differed markedly from the uniform changes seen on the scans of the five patients with proven herniation.