Table 2.
Surgical Characteristics of 84 Patients Who Underwent Lumbar Fusion Surgery for Back Pain and Degenerative Disc Disease.
| Variable | Sample (n = 84) |
|---|---|
| Number of levels: median (IQR) | 1 (1 to 2) |
| 1 | 51 (61%) |
| 2 | 20 (24%) |
| 3 | 7 (8%) |
| 4 | 5 (6%) |
| 5 | 1 (1%) |
| Decompression (i.e. direct) | |
| Posterior midline | 25 (30%) |
| Posterior minimally invasive | 2 (2%) |
| None | 57 (68%) |
| Discectomy | |
| Anterior | 33 (39%) |
| Posterior | 27 (32%) |
| None | 24 (29%) |
| Interbody cage | |
| Anterior | 33 (39%) |
| Posterior | 21 (25%) |
| None | 30 (36%) |
| Fixation | |
| Anterior alone | 26 (31%) |
| Posterior alone | 51 (60%) |
| Anterior plus posterior | 7 (8%) |
| Bone Graft | |
| Autograft | 49 (58%) |
| Allograft | 23 (27%) |
| Bone Morphogenic Protein | 32 (38%) |
| Other synthetic | 24 (29%) |
| Operating time (mins): median (IQR) | 141 (107 to 221) |
| Blood loss (mL): median (IQR) | 200 (100 to 500) |
| Length of stay (days): median (IQR) | 3 (1 to 4) |
IQR = interquartile range.