Treatment options for unstable foraminal stenosis.
| Type | Treatment |
| Type I | Far lateral discectomy |
| Type II | Decompression + transforaminal lumbar interbody fusion/posterior lumbar interbody fusion + rigid instrumentation |
| Type III | Removal of facet + dynamic stabilization |
| Type IV | a) Synovial cyst resection + dynamic stabilization |
| b) Facet resection + dynamic stabilization |