Mean intraoperative blood loss and operative times as noted from anesthetist's chart were significantly lower in stand-alone procedures when compared with procedures supplemented by either pedicle screw fixation or TLIF procedure at another level. Although few patients underwent the procedure alone, morbidity associated with this procedure was substantially lower
| Total | Stand-alone | With posterior procedure | Paired t test | |
|---|---|---|---|---|
| Criteria | (N = 50) | (n = 5) | (n = 45) | P value |
| Estimated blood loss (ml) | 218 | 29 | 234 | .02 |
| Operative time (minutes) | 194 | 55 | 207 | .0001 |