ArticleEuropean spine journal : official publication of the European Spine Society, the European Spinal Deformity Society, and the European Section of the Cervical Spine Research Society2025
Oblique lateral interbody fusion using angle-adjustable cage.
Article in European spine journal : official publication of the European Spine Society, the European Spinal Deformity Society, and the European Section of the Cervical Spine Research Society, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
purposeOrthogonal cage rotation is an essential technique in oblique lateral interbody fusion (OLIF). However, during OLIF at L4-5, this is often limited due to iliac crest. Angle-adjustable cages are designed to insert cages without interference from iliac crest, but there are few studies on whether they are useful. We aimed to compare the radiological outcomes between the conventional cage and angle-adjustable cage inOLIF at L4-5.
methodsThis study involved 90 consecutive patients with degenerative lumbar disease who underwent OLIF at L4-5 with a minimum one-year follow-up. The previous 41 patients used conventional cage (group I), and then 49 patients used angleadjustable cage (group II). Radiological outcomes including cage obliquity, cage position, foraminal height, fusion rate, and cage subsidence were compared between the two groups.
resultsThere were no differences in the mean iliac crest height between the two groups. The cage obliquity was greater in the group I than group II (12.1 ± 7.4° vs. 8.3 ± 7.0°, P = 0.015), and so were the mean cage position from the anterior margin of the L5 vertebra (6.3 ± 3.9 mm vs. 4.7 ± 3.6 mm, P = 0.043). Other than that, there was no significant difference in radiological outcomes between the two groups.
conclusionOur study demonstrated that using an angle-adjustable cage at L4-5 OLIF is more advantageous for orthogonal cage rotation and anterior cage positioning. In L4-5 OLIF, an angle-adjustable cage system is a particularly good option for patients with a high iliac crest.
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