中文摘要：

背景：目前对于漏斗胸微创矫形在生物力学方面的研究已经取得了一些进展,但还缺少脊柱侧弯矫形对漏斗胸胸廓变形的影响,没有脊柱侧弯与漏斗胸同时矫形方面的研究工作。目的：探索漏斗胸与脊柱侧弯同时矫形对畸形胸廓变形的影响,为临床矫形手术方案设计提供参考。方法：采用三维重建方法,利用漏斗胸合并脊柱侧弯病例的CT图片,重建漏斗胸合并脊柱侧弯的胸廓实体模型,采用数值模拟方法模拟对漏斗胸微创矫形和脊柱侧弯拉伸矫形同时矫形的过程。结果与结论：（1）从漏斗胸和脊柱侧弯同时矫形后再卸载的数值结果来看,T3-T5节胸椎两侧的横突有向左（X方向）移动1 mm左右,这说明漏斗胸和脊柱侧弯同时矫形对脊柱侧弯有一定的帮助;（2）通过对比漏斗胸和脊柱侧弯同时矫形与单纯漏斗胸矫形的数值结果可以看出,胸骨柄的最小位移差别明显,同时矫形再卸载脊柱拉伸矫形胸在Y方向上比单纯进行漏斗胸矫形的位移大13.358 mm,说明采用同时矫形再卸载脊柱拉伸矫形对漏斗胸畸形改善有利;（3）在等效应力分布上,同时矫形后胸骨受到的最大应力比单纯进行漏斗胸矫形应力降低24.6 MPa,说明同时矫形后再卸载脊柱拉伸矫形载荷能够显著降低胸廓的等效应力,有助于减轻患者的术后胸廓疼痛问题;（4）结果提示,漏斗形和脊柱侧弯同时矫形不仅对脊柱侧弯改善有利,对漏斗胸病症也有改善作用。

英文摘要：

BACKGROUND： Studies on the biomechanical properties in NUSS procedure have obtained some achievements, but the effect of scoliosis surgical correction of scoliosis on thoracic deformity remains unclear.OBJECTIVE： To explore the effect of simultaneous correction of pectus excavatum and scoliosis on thoracic deformity so as to provide reference for designing a rational orthopedic scheme.METHODS： The three-dimensional reconstruction model of the chest was established based on the CT data of the patients with pectus excavatum and scoliosis. The surgical correction of pectus excavatum and scoliosis was simulated by numerical simulation method.RESULTS AND CONCLUSION： （1） Results after correction showed that the bilateral spinous processes at T3-5 segments displaced to the left （X direction） about 1 mm, suggesting that the simultaneous correction is favorable for the correction of scoliosis. （2） Compared with the single NUSS procedure, the displacement at Y direction was increased by 13.358 mm in the simultaneous correction; meanwhile, there was significant difference in the shortest displacement between two methods.（3） In views of Von Mises stress distribution, the stress in the simultaneous correction was decreased by 24.6 MPa compared with the single Nuss procedure, indicating that the simultaneous correction can significantly reduce the Von Mises stress on the chest, which contributes to alleviate the postoperative pain. （4） Our results show that the simultaneous correction cannot only improve scoliosis, but also improve the symptoms of pectus excavatum.