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The L5/S1 Adjacent Segment Disease (ASD) Following Lumbar Spine Surgery in a Resource‑Constrained Centre in Nigeria
Global Journal of Orthopedics
| Vol 2, Issue 1
Table 1. Baseline Characteristics of 311 Patients
| Characteristic | Category | n (%) |
| Mean±SD | 58.4 ± 11.6 | |
| Age (years) | ≤55 years | 124 (39.9) |
| >55 years | 187 (60.1) | |
| Sex | Male | 198 (63.7) |
| Female | 113 (36.3) | |
| Diagnosis | Degenerative spondylolisthesis | 132 (42.4) |
| Spinal stenosis | 106 (34.1) | |
| Disc herniation | 73 (23.5) | |
| Levels fused | 1–2 levels | 186 (59.8) |
| ≥3 levels | 125 (40.2) | |
| Preoperative L5/S1 disc degeneration | Present | 98 (31.5) |
| Absent | 213 (68.5) |