Animation: Complete S1 spinal root and spinal nerve image demonstrating proximal right sided pathology and distal left sided pathology.

This case involves a 66-year-old woman with bilateral radicular symptoms and non-diagnostic lumbar MRI who did not improve after two decompressive lumbar spine surgeries.

(A) Anterior image plane demonstrated distal right S1 foraminal impingement with hyperintensity in the nerve root seen in A (*) and in B (**).

(B) Posterior image plane (3mm slices, no spacing) confirms hyperintensity in distal S1 root. The right proximal sciatic nerve is broadened and flattened at the sciatic notch with mild edema and increased caliber of fascicles. Her physical exam was consistent with a piriformis syndrome on the left only.

Spinal Disorders Information
Spinal Disorders Diagnosis
Spinal Disorders Treatment
Treatment of Disk Herniations
Advanced Spine Fusion Techniques

Evaluation and Repair of Failed Spine Surgery
Minimal Access Spinal Technologies
Complex Spine Surgery
Distal Foraminal Impingement
Distal Foraminal Impingement - Additional Case
Foraminal Impingement after Disk Surgery
Image Effects of Bone Spur Affecting the Spinal Root
Post-Discectomy Nerve Root Inflammation
Use of MR Neurography for Diagnosis of Routine and Unusual Spinal Pathologies
Causes of Persistent Pain after Lumbar Discectomy