Table 1.
Clinical and radiological characteristics of the study population
| Mean | Group D | Group DS | pa | |||
|---|---|---|---|---|---|---|
| Age | 71 | 73 | 0.6b | |||
| Gender M/F | 7/21 | 7/15 | 0.01c | |||
| Preoperative pain latency (months) | 28 | 32 | 0.5b | |||
| Follow-up (months) | 46 | 44 | 0.9b | |||
| BMI | 28 | 31 | 0.1b | |||
| OP at 1 level | 16 | 16 | ||||
| OP at 2 levels | 9 | 4 | ||||
| OP at 3 levels | 3 | 1 | ||||
| Walking distance (m) | Preoperative | Postoperative | Preoperative | Postoperative | ||
| ≤50 | 15 (54%) | 5 (18%) | 11 (52%) | 4 (19%) | ||
| >50 but ≤500 | 13 (46%) | 9 (32%) | 8 (38%) | 6 (29%) | ||
| >500 but ≤2,000 | 0 (0%) | 7 (25%) | 2 (10%) | 9 (43%) | ||
| >2,000 | 0 (0%) | 7 (25%) | 0 (0%) | 2 (10%) | ||
| VAS | 9 | 4 | 9 | 3 | 0.7 | |
| ODI | 65% | 27% | 63% | 23% | 0.7 | |
| Translational slip (mm) | 1.5 | 1.8 | 2.3 | 1.2 | 0.07 | 0.03 |
| Flexion-extension angle (°) | 5.4 | 5.4 | 6.2 | 3.7 | 0.9 | < 0.001 |
| Revision OP | 4 (14.3%) | 4 (18.2%) | 0.007c | |||
BMI body mass index, OP operation, VAS visual analogue scale, ODI Oswestry Disability Index)
at test
bMann-Whitney U test
cMcNemar test