Female 59 years old Reason: standing lumbar spine ap lateral flexion extension History: lbp. There is grade 1 anterolisthesis of L4 on L5. There is no significant change in the anterolisthesis on flexion or extension positioning.The remaining vertebral body heights and intravertebral disk spaces are preserved.
Grade 1 L4 on L5 anterolisthesis without change upon flexion or extension of the lumbar spine.