Do Obliquity and Position of the Oblique Lumbar Interbody Fusion Cage Influence the Degree of Indirect Decompression of Foraminal Stenosis?

• DOI: 10.3340/jkns.2021.0105
• Publication Date: 2021-12-09T07:09:21Z
• Authors: Akaworn Mahatthan...; Vit Kotheeranurak; Guang-Xun Lin; Jung-Woo Hur; Ho-Jung Chung; Yadhu K Lokanath; Boonserm Pakdeenit; Jin-Sung Kim
• Keywords: Cage

Objective : Oblique lumbar interbody fusion (OLIF) is a surgical technique that utilizes large cage to indirectly decompress neural elements. The position of the relative vertebral body could affect degree foraminal decompression. Previous studies determined using plain radiographs, with conflicting results regarding influence foramen Because obliquity, computed tomography (CT) has better accuracy than radiograph for measurement obliquely inserted cage. objective this study find correlation between OLIF indirect decompression stenosis CT and magnetic resonance imaging (MRI).Methods We review 46 patients who underwent from L2-L5 68 levels. Segmental lordosis (SL) was measured in radiograph. positions were CT. Spinal canal cross-sectional area (SCSA), crosssectional (FSCA) measurements MRI taken into consideration.Results Patients’ mean age 69.7 years. SL increases 3.0±5.1 degrees. Significant SCSA (33.3%), FCSA (43.7% on left 45.0% right foramen) found (p<0.001). Multiple linear regression analysis shows putting more posterior correlated increase FSCA decreases correction. does not central spinal Obliquity result different degrees side foramen.Conclusion Cage near part effect while anterior SL.