Presentation
Low back pain, few hours after fall at work, landing on his back. No radiation of pain to thighs, no numbness.
Patient Data
Age: 35 years
Gender: Male
From the case:
Pars interarticularis defect
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Frontal

Pars interarticularis defect of the 5th lumbar vertebra.
Mildly decreased disc space height with grade I spondylolisthesis at the L5-S1 level.
Case Discussion
Meyerding classification system of spondylolisthesis is: 1
- grade I: 0-25%
- grade II: 26-50%
- grade III: 51-75%
- grade IV: 76-100%
- grade V (spondyloptosis): >100%