45 A 56-year-old woman was troubled by mechanical low back pain that was refractory to conservative treatment. She did not have any neurologic findings. Magnetic resonance imaging (MRI) (sagittal and axial T2-weighted) of the lumbar spine shows a grade II spondylolisthesis of L5-S1 with spondylolysis (Figs. 45-1 and 45-2). Spondylolisthesis with spondylolysis L5-S1 pedicle screw fusion was done.
Pars Defect
Presentation
Radiologic Findings
Diagnosis
Treatment
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