Open Access
Table 4
Baseline demographic data (N = 100 patients), (508 screw).
| Frequency | Percentage | |
|---|---|---|
| Age (years) | Mean 42.4 ± 9.3 (Range, 22–64) | |
| Less than 30 | 12 | 12 |
| 30–40 | 32 | 32 |
| 41–50 | 41 | 41 |
| More than 50 years | 15 | 15 |
| Gender | ||
| Female | 47 | 47 |
| Male | 53 | 53 |
| Spine pathology | ||
| Lumbar disc prolapse | 51 | 51 |
| Spondylolysis | 30 | 30 |
| Fracture | 8 | 8 |
| Posttraumatic kyphosis | 2 | 2 |
| Spinal tumour | 2 | 2 |
| Spinal infection | 2 | 2 |
| Failed spinal fusion | 5 | 5 |
| Number of pathological levels | ||
| Single level | 52 | 52 |
| Two level | 28 | 28 |
| Multi-level | 20 | 20 |
| Level of spine pathology | ||
| Dorsal spine | 5 | 5 |
| Lumbosacral spine | 95 | 95 |
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