TABLE 1.
Patient demographics and clinical baseline characteristics
| Items | Endo‐ULBD (n = 31) | PLIF group (n = 38) | P value |
|---|---|---|---|
| Sex (Male/Female) | 14/17 | 16/22 | 0.065 |
| Age (mean ± SD, years) | 75.52 ± 1.48 | 76.10 ± 0.93 | 0.051 |
| Period (mean ± SD, months) | 9.16 ± 0.96 | 8.97 ± 1.57 | 0.558 |
| Classification (cases) | 0.282 | ||
| CCS | 9 | 16 | |
| LRS | 6 | 3 | |
| Mixed type | 16 | 19 | |
| Schizas classification (cases) | 0.670 | ||
| Grade B | 18 | 19 | |
| Grade C | 13 | 19 | |
| Segment (cases) | 0.251 | ||
| L2‐3 | 2 | 4 | |
| L3‐4 | 4 | 5 | |
| L4‐5 | 22 | 19 | |
| L5S1 | 3 | 10 | |
| Operation time (mean ± SD, min) | 60.68 ± 0.47 | 120.23 ± 10.24 | 0.000 |
| EBL (mean ± SD, mL) | 47.25 ± 0.43 | 256.90 ± 20.83 | 0.000 |
| Hospitalization stay (mean ± SD, days) | 5.12 ± 1.60 | 10.54 ± 1.82 | 0.000 |
| Follow‐up period (mean ± SD, months) | 20.16 ± 0.43 | 21.22 ± 2.47 | 0.827 |
CCS, central canal stenosis; EBL, estimated blood loss; Endo‐ULBD, percutaneous endoscopic unilateral laminectomy for bilateral decompression; LRS, lateral recess stenosis.