Table 1. Demographic Data.
| Variable | Value (N = 36) |
|---|---|
| Sex | |
| Male | 14 |
| Female | 22 |
| Symptomatology | |
| Leg pain only | 10 |
| Back pain | 3 |
| Leg and back pain | 23 |
| Grade of spondylolisthesis | |
| Grade 1 | 29 |
| Grade 2 | 7 |
| Level of spondylolisthesis | |
| L3–4 | 7 |
| L4–5 | 10 |
| L5–S1 | 13 |
| L3–4 and L4–5 | 3 |
| L4–5 and L5–S1 | 3 |
| Surgery | |
| 1-Level decompression | 30 |
| 2-Level decompression | 6 |
| Age (yr) | 63.2 |
| Follow-up period (yr) | 7.2 |
| Residual symptom | |
| None | 27 |
| Leg pain only | 3 |
| Back pain | 4 |
| Leg and back pain | 2 |
| Recurrence of symptom | |
| None | 28 |
| Leg pain only | 5 |
| Back pain | 2 |
| Leg and back pain | 1 |
| Reoperation | |
| Yes | 2 |
| No | 34 |
| Redecompression | 0 |
| Fusion | 2 |