STUDY DESIGN A retrospective analysis was conducted to analyze the position of the aorta by MRI in patients with adult degenerative scoliosis. OBJECTIVE This study aimed to investigate the relative anatomic positions of the aorta and spine in patients with adult degenerative scoliosis (ADS). Aorta injury is a rare complication of spinal surgeries. However, there would be a disastrous consequence once it happened. Therefore, knowing about the position of aorta is of great importance. METHODS A retrospective analysis was performed in 90 patients with ADS and 132 participants without spine deformity. ADS patients were divided into several groups such as left scoliosis, left scoliosis with thoracolumbar kyphosis, right scoliosis, and right scoliosis with thoracolumbar kyphosis. The aorta-vertebrae angle (α) and aorta-vertebrae distance (d) in each level of T12-L4 were measured by using a Cartesian coordinate system. t test of independent samples was performed, α and d were compared, and Pearson correlation analysis was employed for α, d, and X-ray radiographic measurements. RESULT The changes of α were not statistically significant (P > 0.05) in LS and LKS groups but d (P < 0.05) was longer in LKS group compared with the control group. In the right malformed group, there was no significant change in the angle (P > 0.05) in the abdominal aorta but longer d (P < 0.05) than the normal group. There was longer d in the RKS group compared with the RS group (P < 0.05). Pearson correlation analysis showed that there was a positive correlation between d and TLK (r = 0.439, P < 0.05). CONCLUSION In patients with ADS, a relative normal position is maintained between the aorta and vertebrae. While the aorta is slightly away from the left pedicle in RS patients and farther away in patients with kyphosis, the angle of kyphosis would become bigger and d becomes longer. Therefore, the surgeons should be aware of the changes of the aorta position to avoid the disastrous vessel injuries.

中文翻译：

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成人变性脊柱侧弯患者的主动脉相对于脊柱的位置。

研究设计进行回顾性分析，以通过MRI分析成人退行性脊柱侧弯患者的主动脉位置。目的本研究旨在探讨成人退行性脊柱侧凸（ADS）患者主动脉和脊柱的相对解剖位置。主动脉损伤是脊柱外科的罕见并发症。但是，一旦发生，将带来灾难性的后果。因此，了解主动脉的位置非常重要。方法对90例ADS患者和132例无脊柱畸形的参与者进行回顾性分析。ADS患者被分为几组，例如左脊柱侧弯，左胸椎侧凸并伴有胸腰椎后凸畸形，右脊柱侧凸和右脊柱侧凸并伴有胸腰椎后凸畸形。通过使用笛卡尔坐标系来测量T12-L4的每个水平中的主动脉-椎骨角度（α）和主动脉-椎骨距离（d）。进行独立样本的t检验，比较α和d，并使用Pearson相关分析进行α，d和X射线射线照相测量。结果LS组和LKS组的α变化无统计学意义（P> 0.05），而LKS组的d（P <0.05）较对照组长。在右侧畸形组中，腹主动脉的角度没有明显变化（P> 0.05），但比正常组的d更长（P <0.05）。与RS组相比，RKS组的d更长（P <0.05）。Pearson相关分析表明，d与TLK之间存在正相关（r = 0.439，P <0.05）。结论在ADS患者中，主动脉和椎骨之间保持相对正常的位置。在RS患者中，主动脉稍微远离左椎弓根，而在后凸畸形患者中，主动脉距离更远，而后凸畸形的角度会变大，而d会变长。因此，外科医生应注意主动脉位置的变化，以免造成灾难性的血管损伤。