在Lenke型V青少年异常脊椎病的第一个冠状逆脊椎的生物力学特征:使用有限元分析的研究
Zhenguo Shang1, Zhiyong Hou2, Wei Chen2
1Department of Spinal Surgery, Hebei Medical University Third Hospital, Shijiazhuang, Hebei, China.
Orthopaedic surgery
|December 9, 2024
概括
第一个冠状逆脊椎 (FCRV) 在青少年异常脊椎病 (AIS) 中显著增加相邻下盘 (LD) 的压力. 这种压力集中在的侧面,影响治疗策略.
科学领域:
- 生物机械分析分析
- 脊柱形症 脊柱形症 脊柱形症
- 青少年异常学脊椎病 (AIS) 是一种疾病.
背景情况:
- 第一个冠状逆脊椎 (FCRV) 是一个特定的脊柱异常.
- 它们对邻近脊柱段的生物力学变化的直接影响尚未完全理解.
- 了解AIS中的压力分布对于有效管理至关重要.
研究的目的:
- 调查FCRV邻的椎间盘中的生物力学变化.
- 为了澄清青少年异常学脊椎病 (AIS) 患有FCRV的压力分布模式.
主要方法:
- 使用AIS患者的CT扫描数据开发了一个3D有限元模型,T9作为FCRV.
- 在各种负载条件下分析了相邻的上盘 (UD) 和下盘 (LD) 的生物机械变化.
- 评估了包括半盘 (HUD,HLD) 在内的特定部分的应力分布.
主要成果:
- 与上盘 (UD) 和半盘 (HUD,HLD) 相比,下盘 (LD) 的最大Von-Mises应力值显著更高.
- 在横向曲负载下 (左侧和右侧) 下,LD的平均应力比其他细分更大.
- 应力度观察到LD的面,特别是在中立立和横向曲负荷下.
结论:
- FCRV直接导致相邻下盘 (LD) 的应力强度增加.
- 压力分布显示在脊柱状的面上局部度趋势.
- 这些发现可以为患有FCRV的AIS患者的治疗计划和临床决策提供信息.
更多相关视频
相关概念视频
General Case of Eccentric Axial Loading
172
Unsymmetrical bending occurs when the bending moment applied to a structural member does not align with its principal axis. This misalignment leads to complex stress distributions and deflection patterns that differ from symmetrical bending, which are essential for designing structures to withstand different loading conditions.
Consider a member subjected to equal and opposite forces that are applied along a line that does not coincide with the member's neutral axis. In unsymmetrical...
Consider a member subjected to equal and opposite forces that are applied along a line that does not coincide with the member's neutral axis. In unsymmetrical...
172
Vertebral Column: Regions and Curvature
3.5K
The vertebral column or spine is a flexible column that supports the head, neck, and body and allows for their movements. It also protects the spinal cord.
Regions of the Vertebral Column
In an adult, the spine is subdivided into five regions: the cervical, the thoracic, the lumbar, the sacral, and the coccygeal region. The spine initially develops as a series of 33 vertebrae; after 20 years of age, the nine bones in the sacral region, five sacral, and four coccygeal bones fuse to form...
Regions of the Vertebral Column
In an adult, the spine is subdivided into five regions: the cervical, the thoracic, the lumbar, the sacral, and the coccygeal region. The spine initially develops as a series of 33 vertebrae; after 20 years of age, the nine bones in the sacral region, five sacral, and four coccygeal bones fuse to form...
3.5K
Eccentric Axial Loading in a Plane of Symmetry
162
Eccentric axial loading occurs when an axial load is applied away from the centroidal axis of a structural member. This scenario is common in engineering, where structural elements may not be directly aligned due to various design or functional requirements.
162
General Structure of a Vertebra
2.6K
A typical vertebra, with the exception of the sacrum and coccyx, consists of a body, a vertebral arch, and seven different projections termed processes. The anterior portion of the vertebrae, the body, supports about half the body’s weight. The vertebral bodies progressively increase in size and thickness from the cervical region to the lumbar region of the vertebral column. The intervertebral discs present between the bodies of adjacent vertebrae firmly unites them, forming a continuous...
2.6K
Bending of Curved Members - Strain Analysis
128
The mechanics of deformation in curved members, such as beams or arches, under bending moments, involve complex responses. When such a member, symmetric about the y-axis and shaped like a segment of a circle centered at point C, is subjected to equal and opposite forces, its curvature and surface lengths change significantly. This alteration results in the shift of the curvature's center from C to C', indicating a tighter curve.
The important part of bending analysis for such a member...
The important part of bending analysis for such a member...
128
Normal Strain under Axial Loading
443
Normal strain under axial loading is an important concept in the field of mechanics of materials. Axial loading implies the application of a force along the axis of a material, like a column or bar. This force can either compress or stretch the material. In the context of axial loading, normal strain is the deformation experienced by the material in the direction of the loading force. It's calculated as the change in length divided by the original length of the material. This unitless ratio...
443


