Table 1 Baseline characteristics of 33 patients undergoing oblique lumbar interbody fusion for lumbar foramen stenosis
Characteristics | |
|---|---|
Age (years), mean ± SD (range) | 61.9 ± 11.3 (33–83) |
Sex, n (%) | 33 |
Male | 10 (30.3%) |
Female | 23 (69.7%) |
Body mass index (kg/m2), mean ± SD (range) | 26.9 ± 3.7(21.1–37.5) |
Causes of foraminal stenosis, n (%) | 33 |
Spondylolisthesis (including true spondylolisthesis) | 12 (36.4%) |
Degenerative scoliosis | 7 (21.2%) |
Hypertrophy of ligamentum flavum or Hyperplasia of articular process | 4 (12.1%) |
Lumbar intervertebral disc degeneration and Decrease of intervertebral space height | 10 (30.3%) |
Level, n (%) | 33 |
Single level | 20 (60.6%) |
Two level | 11 (33.3%) |
Three level | 2 (6.1%) |
Surgical level, n (%) | 48 |
L2/3 | 5 (10.4%) |
L3/4 | 7 (14.6%) |
L4/5 | 29 (60.4%) |
L5/1 | 7 (14.6%) |
Foraminal stenosis grade, n (%) | 96 |
Grade 1 | 52 (54.2%) |
Grade 2 | 33 (34.4%) |
Grade 3 | 11 (11.5%) |