Abstract

DE ZAVALIA, Máximo; PIERRO, Inés; MAZZEO, Juan J.  and  GOBBI, Enrique A.. Planificación basada en imágenes de resonancia magnética para la cirugía de columna de acceso lateral. ¿Es un procedimiento seguro? Estudio descriptivo de distribución de grandes vasos y psoas. Rev. Asoc. Argent. Ortop. Traumatol. [online]. 2023, vol.88, n.3, pp.351-361. ISSN 1852-7434.  http://dx.doi.org/https://doi.org/10.15417/issn.1852-7434.2023.88.3.1702.

Objective: The objective of this study is to provide an anatomical description of the structures involved in the extreme lateral interbody fusion (XLIF) technique based on MRI images in the dorsal decubitus position. Materials and Methods: An observational, descriptive, and retrospective study of 200 patients treated at our institution was conducted using MRI images of the lumbosacral spine. The vena cava, aorta artery, and the width and height of the psoas muscle were measured in axial images to establish the safe and danger zones. Results: The final sample consisted of 164 patients, with a mean age of 50.4 for males and 50.6 for females. The abdominal aorta artery is located predominantly on the left side zone A on its path to the L3-L4 space. When it reaches the L4-L5 area, the iliac arteries bifurcate in 95.7% of the patients. The vena cava tends to be located on the right side, bifurcating at the L4-L5 level. Conclusions: Preoperative planning and safe zone delimitation are simple methods for determining the relative position of neural and vascular anatomical structures in relation to the surgical area. This technique can help spine surgeons prevent perioperative complications.

Keywords : XLIF; big blood vessels; lateral interbody fusion; nuclear magnetic resonance; psoas.

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