44-year-old male is status post 6-foot fall from ladder with L4 compression fracture and retrolisthesis of L4 on L5 on x-ray Advanced degenerative disk disease with significant vacuum phenomenon and sclerotic changes of the adjacent endplates at L5 -- S1 level is noted. There is grade 1 anterolisthesis at this level secondary to bilateral pars defects (spondylolysis).Less than 50% compression fracture of the superior endplate of L4 and a small loose fragment anterior to the vertebral body is noted. The alignment of the spine at this level remains normal. No evidence of any fracture of the posterior elements is noted. The facets remain aligned at this level however demonstrate degenerative changes and minimal widening of the facet space which may be secondary to degenerative changes or possibly soft tissue injury secondary to patient's fall.For better evaluation of the soft tissues and MRI would be helpful. No definitive evidence of any compromise of the spinal canal at this level is detected.
1.Compression fracture of superior endplate of L4 with no malalignment.2.Grade 1 antral listhesis at L5 -- S1 secondary to bilateral spondylolysis.