Legend
Left – Sagittal T2 and T1WIs reveal grade I spondylolisthesis at L5-S1 with a large spinal canal.
Right – Axial T1and T2WIs at the level of the spondylolisthesis disclose bilateral spondylolysis
of the pars interarticularis (isthmus). Note that the spondylolysis is more horizontal, while
the normal facets are more oblique.
Legend
Sagittal T1WI’s show fractures of the L5 pars on both sides, with severe narrowing of the L5-S1
foramina, particularly on the right.
Key words: mri degenerative
Spine Diagnosis:
Spondylolysis & spondylolisthesis