Schmorl's node
Pronunciation: SHMORLZ nohd
Herniation of nucleus pulposus material through the vertebral endplate into the adjacent vertebral body, visible on imaging.
Full Definition
A Schmorl's node represents herniation of nucleus pulposus material through a defect in the vertebral endplate into the cancellous bone of the adjacent vertebral body. Named after German pathologist Christian Georg Schmorl, these lesions appear as well-defined depressions or indentations in the vertebral endplate on imaging studies. Schmorl's nodes can be developmental, degenerative, or traumatic in origin and are generally asymptomatic. They differ from disc herniations in that they involve herniation into bone rather than into the spinal canal or neural foramina. Recognition is important to avoid confusion with other pathological processes.
Usage
Usage note: Always use possessive form (Schmorl's); distinguish from disc herniations.
In Context
- "MRI demonstrated multiple Schmorl's nodes throughout the lumbar spine." — radiology report
- "The endplate irregularity was consistent with a chronic Schmorl's node." — imaging interpretation