TABLE 1.
Patient demographics and surgical details between the two groups>
| Parameters | n‐HA/PA66 cage (n = 100) | PEEK cage (n = 100) | t / X 2 | p value |
|---|---|---|---|---|
| Age (years) | 56.5 ± 11.2 | 56.0 ± 11.9 | −0.432 | 0.811 |
| Sex (n) | 0.285 | 0.771 | ||
| Male | 37 | 39 | ||
| Female | 63 | 61 | ||
| BMI (kg/m2) | 24.3 ± 3.0 | 24.3 ± 3.3 | 0.032 | 0.975 |
| Diabetes (n) | 9 | 11 | 0.222 | 0.637 |
| Smoking (n) | 12 | 14 | 0.177 | 0.674 |
| T‐score for BMD | −0.5 ± 1.2 | −0.3 ± 1.5 | −0.345 | 0.618 |
| Diagnosis (n) | 0.870 | 0.886 | ||
| Spinal stenosis | 38 | 40 | ||
| Recurrent lumbar disc herniation | 4 | 2 | ||
| Degenerative spondylolisthesis | 33 | 35 | ||
| Isthmic spondylolisthesis | 25 | 23 | ||
| Surgical level (n) | 0.025 | 0.876 | ||
| One‐level | 28 | 29 | ||
| Two‐level | 72 | 71 | ||
| Operative time (min) | 198.5 ± 37.2 | 187.0 ± 34.6 | 0.457 | 0.562 |
| Intraoperative blood loss (ml) | 385.2 ± 110.5 | 381.7 ± 126.3 | −0.311 | 0.650 |
| Follow‐up time (moths) | 96.3 ± 11.8 | 94.5 ± 8.7 | 0.829 | 0.315 |
Abbreviations: BMD, bone mineral density; BMI, body mass index.