The conus medullaris is the cone-shaped, caudal end of the spinal cord.
Anatomy
In adults, the conus medullaris is located approximately at the level of the first or second lumbar vertebral body and continues caudally as the cauda equina. EnlargeAnatomical variation in the termination of the conus medullaris. Figure adapted from Wilson et al. 1989.
Imaging
EnlargeIllustration of the spinal dura mater and its contents at the caudal end. Illustration adapted from Sobotta's Atlas and Text-book of Human Anatomy 1909, Figure 614.
Imaging
The conus medullaris can be visualized on MRI.
EnlargeVisualization of the conus medullaris on a sagittal T2-weighted MRI sequence.
References
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