Motor weakness

A 37-year-old man presented with progressive limitation of activities due to bilateral motor weakness of the lower extremities for several weeks. He had no history of strenuous sporting activity or low back pain. Neurological examination revealed motor weakness in iliopsoas and quadriceps muscles, and muscle power was rated at a manual muscle testing level of 2. He had no urinary dysfunction or lower extremity sensory dysfunction. A plain radiograph and Magnetic resonance imaging (MRI) revealed severe degenerative disc change and severe canal stenosis at L1-2. Computed tomography (CT) was done.