lumbar spinal stenosis l4 l5l4 and l5 laminectomysevere facet arthropathy l4 l5l4 l5 severe spinal canal stenosisl4 l5 spinal stenosis surgerydecompression laminectomy l4 l5laminectomy l4 l5 recoveryl4 l5 microdiscectomy recoverybilateral laminectomy l4 l5l4 l5 laminectomy and discectomyanterior spondylolisthesis of l4 on l5back surgery l4 l5 laminectomy
