经椎间孔腰椎椎体间融合术（TLIF）中与椎间融合器位置相关的腰椎节段变化
CHANGES IN THE LUMBAR VERTEBRAL SEGMENT RELATED TO THE CAGE POSITION IN TLIF TECHNIQUE.
作者信息
Matos Thiago Dantas, Fleury Rodrigo Barra Caiado, Teixeira Kelsen DE Oliveira, Romero Valéria, Defino Helton Luiz Aparecido
机构信息
Universidade de São Paulo, Faculdade de Medicina de Ribeirão Preto, Departamento de Cirurgia Ortopedia e Traumatologia, Ribeirão Preto, SP, Brazil.
Universidade Estadual de Campinas, Medical School, Campinas, SP, Brazil.
出版信息
Acta Ortop Bras. 2020 Mar-Apr;28(2):92-96. doi: 10.1590/1413-785220202802224215.
OBJECTIVE
To evaluate the morphological changes on the intervertebral foramen and segmental lordosis related to the transforaminal lumbar interbody fusion (TLIF) positioning.
METHODS
PEEK cages were placed in the disc space (L1-S1) of a polyurethane anatomical model. Cages of different heights (8 mm, 10 mm, 12 mm and 14 mm) were positioned in the posterior, medial or anterior part of the vertebral body surface, and the intervertebral foramen and segmental lordosis heights were measured after their insertion.
RESULTS
The vertebral foramen height decreased in all positions and heights of the cages in relation to the control. The cage posterior positioning induced a smaller reduction in the vertebral foramen height. Vertebral lordosis tended to increase in relation to the control, and the greatest increase occurred with the cage posterior positioning.
CONCLUSION
Cage positioning induces changes in the intervertebral foramen height and in the vertebral segment lordosis. Cage posterior positioning induces a smaller reduction of the intervertebral foramen height and increases the vertebral segment lordosis.
目的
评估与经椎间孔腰椎椎间融合术（TLIF）定位相关的椎间孔形态变化和节段性前凸。
方法
将聚醚醚酮（PEEK）椎间融合器置于聚氨酯解剖模型的椎间盘间隙（L1-S1）。不同高度（8毫米、10毫米、12毫米和14毫米）的椎间融合器分别置于椎体表面的后方、中间或前方，植入后测量椎间孔和节段性前凸高度。
结果
与对照组相比，所有位置和高度的椎间融合器均使椎间孔高度降低。椎间融合器后置导致椎间孔高度降低幅度较小。与对照组相比，椎体前凸有增加趋势，且椎间融合器后置时增加幅度最大。
结论
椎间融合器定位会引起椎间孔高度和椎体节段前凸的变化。椎间融合器后置导致椎间孔高度降低幅度较小，并增加椎体节段前凸。
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