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Fig. 1 | BMC Musculoskeletal Disorders

Fig. 1

From: Comparison of radiological changes after single- position versus dual- position for lateral interbody fusion and pedicle screw fixation

Fig. 1

A radiographic analysis of XLIF cage positioning. (A) Plain lateral radiographs: segmental disc angle (SDA), disc height (DH), and slipping length (SL). (B) Magnetic resonance imaging (MRI)-T2 axial: cross-sectional spinal canal area (CSA). (C) MRI-T2 sagittal: diameter of the spinal canal. ADH; anterior disc height, PDH; posterior disc height. (D) The cage centre (c) is located by the midpoint between the anterior and posterior radiomarkers of the cage. The solid line (a) indicates distance between the anterior vertebral border (AVB) and the centre of the cage. The dotted line (b) indicates the anteroposterior width of the superior end plate. The cage positioning was measured using a Magnetic resonance imaging T1- weighted imaging and the value (a) divided by the full distance of the endplate (b) was expressed

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