| Patient number | Age | Gender | Follow-up period (months) | Side of procedure | Other diagnoses | Previous operations/procedures |
| 1 | 56 | F | 49 | Right | HNP, L4-5, Lt. | Root block, L4, 5, Lt. | 2 | 70 | F | 37 | Left | Extraforaminal HNP, L5-S1, Lt. | Transforaminal epidural block, L5-S1, Lt. | 3 | 74 | F | 36 | Both | HNP, L3-4, 4-5, 5-S1 | Caudal block medial branch block, L3-4, 4-5, 5-S1, both | 4 | 73 | F | 35 | Both | Spinal stenosis, L3-4, 4-5 | Medial branch block, L3-4, 4-5, both | 5 | 76 | F | 35 | Left | HNP, L4-5, Rt. | (1) Decompressive hemilaminectomy, L4, Rt. (2005) (2) Medial branch RFA, L4, 5, Rt. (2006) | 6 | 81 | F | 22 | Right | Spinal stenosis, L3-4, 4-5 | PLIF, L3-4, 4-5 (2008) | 7 | 37 | F | 22 | Right | Spinal stenosis, L4-5, L5-S1 | Root block, L4, 5, Rt. | 8 | 72 | F | 21 | Left | Spinal stenosis, L5-S1 | PLIF, L5-S1 (2001) | 9 | 61 | F | 15 | Left | Spondylolisthesis, L4-5 | 2014.10.8 MIS TLIF 45 (post-procedure) | 10 | 57 | F | 13 | Right | Spinal stenosis, L4-5 | PLIF, L4-5 (2012) | 11 | 48 | F | 13 | Right | HNP, L3-4, Rt. | Transforaminal epidural block, L3-4, Rt. | 12 | 58 | F | 12 | Right | Spondylolisthesis, L3-4 | Caudal block, epidural block, L3-4 Trigger point injection of paravertebral muscles | 13 | 56 | F | 12 | Left | HNP, L5-S1, Rt. | Discectomy, L5-S1, Rt. (2013) | 14 | 58 | F | 10 | Both | Facet arthropathy, L4-5, Lt. | Medial branch RFA, L4, 5, Lt. (2013) | 15 | 60 | F | 9 | Both | Spondylolisthesis, L4-5 | PLIF, L4-5 (2013) | 16 | 47 | M | 9 | Right | HNP, L5-S1, Lt. | Discectomy, L5-S1, Lt. (2013) | 17 | 69 | F | 8 | Right | Spondylolisthesis, L4-5, L5-S1 | PLIF, L4-5, 5-S1 (2008) |
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