Anterior epidural fat as a diagnostic marker on magnetic resonance imaging for differentiating isthmic and degenerative lumbar spondylolisthesis: a retrospective study.

Presence of EF Anterior EF was observed in 123 (95.3%) of the patients with isthmic spondylolisthesis cases but in only 41 (28.3%) of those with degenerative spondylolisthesis; this difference was highly significant ( p <0.001).

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