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- W1996448696 abstract "Study Design. A prospective comparative radiographic study between two geometrically varying implants utilized in single-level posterior lumbar interbody fusion (PLIF) was performed. Objective. The aim of this study was to determine the influence of 4° wedged cages on postoperative lateral lumbar spinal profile. Summary of Background Data. The biomechanical and clinical importance of realigning the sagittal lumbar profile in surgical management of spinal instabilities is known. Wedged cages are therefore increasingly attaining popularity in PLIF. As yet the significance of wedged implants on postoperative sagittal spinal profile has not been assessed. Methods. Forty patients were randomly assigned to two equal-sized groups. In one group rectangular cages and in the second group cages with a wedged design and an inclination of 4° were implanted. Quantitative assessment of the lumbar spinal profile on standing neutral lateral radiographs was performed before surgery as well as 6 weeks and 12 months after surgery. Results were statistically compared. Results. A significant improvement of lumbar sagittal profile after use of 4° wedged compared with nonwedged cages was not found. The greatest effect on lumbar profile and segmental lordosis was observed in fusion of segment L4–L5 with 4° wedged cages. Conclusions. These results show that normal sagittal alignment after single-level lumbar fusion can be achieved with rectangular and 4° wedged cages. Although results after utilization of 4° wedged cages do not significantly differ, these implants offer the surgeon one more sizing variation with which physiologic lumbar lordosis may be attained. The biomechanical implications of wedged implants on the rigidity of a fused segment remain to be analyzed." @default.
- W1996448696 created "2016-06-24" @default.
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- W1996448696 date "2001-06-01" @default.
- W1996448696 modified "2023-10-17" @default.
- W1996448696 title "Radiographic Spinal Profile Changes Induced by Cage Design After Posterior Lumbar Interbody Fusion" @default.
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- W1996448696 doi "https://doi.org/10.1097/00007632-200106150-00019" @default.
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