Greimel, Felix and Wolkerstorfer, Stefanie and Spoerrer, Jan-Frederik and Zeman, Florian and Hoffstetter, Patrick and Grifka, Joachim and Benditz, Achim (2017) Radiological outcome of postoperative sagittal balance on standing radiographs in comparison to intraoperative radiographs in prone position when performing lumbar spinal fusion. ARCHIVES OF ORTHOPAEDIC AND TRAUMA SURGERY, 137 (10). pp. 1319-1325. ISSN 0936-8051, 1434-3916
Full text not available from this repository. (Request a copy)Abstract
Aim of this study is to show the outcome of postoperatively measured lumbar lordosis in upright position in comparison to the intraoperatively estimated lumbar lordosis in prone position, as the lumbar lordosis is one of the most important factors for the clinical outcome after spinal fusion. Eighty-two patients, receiving lumbar fusion were included in this retrospective study. Intraoperative radiographs were scanned. Then radiographs of the whole spine pre- and postoperatively, as well as 1 year after surgery were measured by a spine surgeon and a radiologist. The visible segment lordosis angles were measured and compared (L2-S1, L3-S1, L4-S1, L5-S1). In addition, the pelvic parameters pelvic incidence, pelvic tilt and sacral slope were measured pre- and postoperatively. The intraobserver reliability was almost perfect. The mean lordosis angle L4-S1 was 32.6A degrees A +/- 7.8A degrees intraoperatively and 29A degrees A +/- 10.8A degrees postoperatively. A linear correlation of these two measurements can be seen. In mean, the postoperative lordosis is 4A degrees smaller than intraoperatively. This trend can also be seen in the level L3-S1. In levels L2-S1 and L5-S1 the postoperative values were slightly higher than intraoperatively, but without any significance. Also, 1 year after surgery there were no significant changes in global lumbar lordosis. Measuring lordosis angles intraoperatively resulted in almost the same values as measurements in standing plane radiographs postoperatively, despite prone position. These findings could especially be shown for the level L4-S1. The intraobserver reliability was almost perfect for both, intra- and postoperative measurements. In conclusion, the intraoperative measurement of a lumbar lordosis angle can perfectly predict the postoperative result.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | PELVIS; ALIGNMENT; VALUES; Lumbar lordosis; Sagittal balance; Standing radiographs; Prone radiographs; Correlation; Single-level lordosis; Lumbar spine; Sacral slope; Radiographic comparison; Lumbar spine |
| Subjects: | 600 Technology > 610 Medical sciences Medicine |
| Divisions: | Medicine > Lehrstuhl für Orthopädie Medicine > Zentren des Universitätsklinikums Regensburg > Zentrum für Klinische Studien |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 14 Dec 2018 13:19 |
| Last Modified: | 19 Feb 2019 09:14 |
| URI: | https://pred.uni-regensburg.de/id/eprint/2138 |
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