This color enhanced parasagittal (off the midline view from the side) T2 weighted MRI of the lumbar spine demonstrates marrow edema in the L5 pedicle,indicated by blue. A bony defect of the L5 pars interarticularis which is called a spondylolysis is also seen (red). The presence of marrow edema may indicate an acute break in the bone or ongoing inflammation. Sometime a forward slip of the affected vertebrae on the one below will occur when there is spondylolysis. When this occurs it is called spondylolisthesis | |
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Credit: | Science Photo Library / Living Art Enterprises |
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