Table 2

Summary of prior failed back surgery procedures

Discectomy Group	26
1 Level laminectomy and discectomy	2
2 Levels laminectomy and discectomy	3
3 Levels laminectomy and discectomy	1
Laminectomy revisions by microdiscectomy		1
Laminectomy revisions by Fusion		3
1 Level microdiscectomy	10
2 Levels microdiscectomy	5
Microdiscectomy revisions by microdiscectomy		1
Microdiscectomy revisions by stenosis decompression		4
Microdiscectomy revisions by fusion		3
Primary axial “Decompression” & discectomy	2
Primary lateral recess “Decompression” & discectomy	3
Primary Fusion Group	13
1 Level posterior lumbar interbody fusion	5
2 Level posterior lumbar interbody fusion	4
1 Level anterior lumbar interbody fusion	2
2 Level anterior lumbar interbody fusion	1
2 Level posterolateral instrumented fusion	2
2 Level Graf Ligament fusion	1