Table 1.
Profiles of patients with ASD
| Case No. | Age/sex | Initial diagnosis | Initial fusion | Fusion technique | Interval to revision (months) | Motor weakness | ASD |
|---|---|---|---|---|---|---|---|
| 1 | 57/F | DSL L4–5 | L4–5 | PLF and PLIF | 33 | No | SS L2–4 |
| 2 | 60/F | SS L2–4, DSL L4–5 | L2–5 | PLF, PLIF | 14 | Yes | SS and HIVD T12–L1–2 |
| 3 | 69/F | HIVD L2–3, DSL L4–5 | L2–3, L4–5 | PLF, PLIF | 37 | No | SS L3–4 |
| 4 | 57/F | SS L3–5 | L3–5 | PLF | 99 | Yes | RL and SS L2–3 |
| 5 | 52/F | DSL L4–5 | L4–5 | PLIF | 98 | No | AL and SS L3–4 |
| 6 | 65/M | DSL L3–5, DS,SL L5 | L3–5–S1 | PLIF | 16 | Yes | RL and SS L2–3 |
| 7 | 66/F | SS L4–5–S1, HIVD L1–2 | L4–5–S1 | PLF | 44 | Yes | RL L2–3, SS L2–4 |
| 8 | 48/F | DSL L4–5 | L4–5 | PLF and ALIF | 116 | No | AL and SS L3–4 |
| 9 | 58/F | DSL L3–5 | L3–5 | PLF, PLIF | 16 | Yes | HIVD and SS L5–S1 |
| 10 | 52/F | SS L4–5–S1 | L4–5–S1 | PLF, PLIF | 9 | No | SS L3–4 |
| 11 | 55/M | DSL L3–5, SS L3–5–S1 | L3–5–S1 | PLIF | 11 | Yes | SS L3–4 |
| 12 | 65/M | SS L2–5 | L2–5 | PLF, PLIF | 41 | Yes | RL and SS L1–2 |
| 13 | 50/F | RL and SS L4–5 | L4–5 | PLF | 68 | No | AL and SS L3–4 |
| 14 | 59/F | SS L4–5 | L4–5 | PLF | 55 | No | SS L2–4, RL L3–4 |
| 15 | 48/F | DSL L4–5, SS L3–5 | L3–5 | PLF | 76 | No | AL and SS L2–3 |
| 16 | 59/F | DSL L4–5 | L4–5 | PLF and PLIF | 52 | No | HIVD L2–4, AL L3–4 |
| 17 | 64/M | SS L3–5 | L3–5 | PLF | 28 | Yes | SS and HIVD L2–3 |
| 18 | 58/M | DSL L4–5 | L4–5 | PLF | 26 | No | HIVD and SS L3–4 |
| 19 | 53/M | DSL L4–5 | L4–5 | PLF and ALIF | 125 | No | RL and HIVD L2–3, SS L2–4 |
| 20 | 46/F | DSL L4–5, SS L3–5 | L3–5 | PLF, PLIF | 80 | No | AL and SS L2–3 |
| 21 | 76/M | DSL L5–S1 | L5–S1 | PLIF | 50 | No | AL and SS L4–5 |
| 22 | 61/M | ISL L5–S1, SS L4–5–S1 | L4–5–S1 | PLF, PLIF | 55 | No | RL and SS L2–4 |
| 23 | 51/F | DSL L3–4, SS L3–5 | L3–5 | PLF, PLIF | 35 | No | AL, SS and HIVD L2–3 |
| 24 | 60/F | DSL L3–4, RL L4–5 | L3–5 | PLIF | 59 | No | AL with kyphosis L1–2, LL L2–3, DS |
| 25 | 53/F | DSL L4–5 | L4–5 | PLF | 79 | No | AL and SS L3–4 |
| 26 | 70/M | DSL L4–5 | L4–5 | PLF and PLIF | 50 | No | SS L3–4 |
| 27 | 64/F | DSL L4–5, SS L4–5–S1 | L4–5–S1 | PLIF | 66 | No | SS L2–4 |
| 28 | 60/M | SS L2–S1 | L2–S1 | PLF | 27 | Yes | AL, SS and HIVD L1–2, VCF L1 |
DSL degenerative spondylolisthesis, SS spinal stenosis, HIVD herniated intervertebral disc, DS degenerative scoliosis, SL spondylolysis, RL retrolisthesis, ISL isthmic spondylolisthesis, PLF posterolateral fusion, PLIF posterior lumbar interbody fusion, ALIF anterior lumbar interbody fusion, ASD adjacent segment disease, AL anterolisthesis, LL lateral listhesis, VCF vertebral compression fracture