Ortho Dx: Back pain and loss of bladder control

A 65-year-old woman presents to the emergency department with acute chronic back pain and lower extremity weakness. She has also had loss of bladder control during the last 8 hours. Sagittal MRI images (Figures 1 and 2) show anterolisthesis of T11 on T12 resulting in severe canal stenosis and kinking of the spinal cord. ...