| Age |
56.7 (SD 12.2) |
| Gender |
| Male |
45% |
| Female |
55% |
| Number of fused mobile segments |
| One |
135 |
| Two |
108 |
| Three |
31 |
| Equal or more than four |
43 |
| Fusion to sacrum |
| Yes |
174 |
| No |
143 |
| Diagnosis |
| Degenerative spondylolisthesis |
33.2% |
| Degenerative disc disease with stenosis |
25.6% |
| Degenerative scoliosis with sagittal deformity |
21% |
| Revision for non-union (primary procedure done at another institution) |
8% |
| Lumbar disc herniation (including recurrence) |
6.1% |
| Proximal junctional failure (primary procedure done at another institution) |
4.5% |
| Others (fracture, infection) |
1.6% |
