Lumbosacral and Spinopelvic Anatomy and Pathology - Degenerated L5 Disc

Posterior Half Moderately Degenerated L5 Disc

Sagittal closeup view of the posterior half of a moderately degenerated L5-S1 disc at the lateral recess level
Sagittal closeup view of the posterior half of a moderately degenerated L5–S1 disc at the lateral recess level in a 54–year–old man who had no history of low back pain or radicular symptoms. The cancellous bone of the vertebral bodies, the brick–red tissue occupying the trabecular spaces represents healthy bone marrow. As in Section 1, the outermost lamellae of the annulus fibrosus are dark due to their high collagen content, the outer annulus bulges markedly into the lateral recess. The central portion of the disc is transformed into a dark mass that extends towards the lower endplate of L5. At this level the cartilaginous endplate has vanished and the subchondral osseous trabeculae are transformed into sclerotic bone. Horizontal clefts extend posteriorly along the upper apophyseal ring of SI. Note the thick SI root immediately under the bulging disc.

©2000 Wolfgang Rauschning, M.D., Ph.D.
Professor of Clinical Anatomy
Academic University Hospital
Department of Orthopaedic Surgery
Uppsala, Sweden
Reproduction without permission is prohibited
http://www.akademiska.se/
Updated on: 02/01/10
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