中国组织工程研究 ›› 2016, Vol. 20 ›› Issue (17): 2526-2532.doi: 10.3969/j.issn.2095-4344.2016.17.013

• 数字化骨科 digital orthopedics • 上一篇    下一篇

生理载荷下健康成人寰枢椎三维瞬时运动的特点

魏 冬1,2,夏 群2,苗 军2,白剑强2,刘佳男2,李宏达2   

  1. 1天津中医药大学研究生院,天津市 300193;2天津医院脊柱外科二病区,天津市 300162
  • 收稿日期:2016-02-06 出版日期:2016-04-22 发布日期:2016-04-22
  • 通讯作者: 夏群,教授,主任医师,天津市天津医院脊柱外科二病区,天津市 300162
  • 作者简介:魏冬,男,1988年生,吉林省九台市人,汉族,天津中医药大学在读硕士,医师,主要从事脊柱的生物力学研究。
  • 基金资助:

    国家自然科学基金资助项目(81472140,8157090604)

Three-dimensional transient motion characteristics of atlanto-axial joint in healthy adults under physiological load

Wei Dong1, 2, Xia Qun2, Miao Jun2, Bai Jian-qiang2, Liu Jia-nan2, Li Hong-da2   

  1. 1Graduate School, Tianjin University of Traditional Chinese Medicine, Tianjin 300193, China; 2Second Ward, Department of Spinal Surgery, Tianjin Hospital, Tianjin 300162, China
  • Received:2016-02-06 Online:2016-04-22 Published:2016-04-22
  • Contact: Xia Qun, Professor, Chief physician, Second Ward, Department of Spinal Surgery, Tianjin Hospital, Tianjin 300162, China
  • About author:Wei Dong, Studying for master’s degree, Physician, Graduate School, Tianjin University of Traditional Chinese Medicine, Tianjin 300193, China; Second Ward, Department of Spinal Surgery, Tianjin Hospital, Tianjin 300162, China
  • Supported by:

     the National Natural Science Foundation of China, No. 81472140, 8157090604

摘要:

文章快速阅读:

 

文题释义:
双荧光透视影像系统:双荧光透视影像系统和CT检查相结合的非侵袭技术是人体生物力学在体研究的新理念,最早由哈佛大学麻省总医院骨科生物工程实验室Guoan Li教授提出,通过在计算机软件计算受试者脊柱椎体CT获取的每一节段三维模型,匹配到双荧光透视影像系统采集的不同活动体位的双斜位X射线透视图像上,实现二维-三维图像空间匹配,从而实现在生理载荷下人体脊柱的真实运动状态。本研究拟通过该技术建立寰枢椎在体运动学测试平台,并获得健康成人上颈椎三维运动学数据。
六自由度:在实验中,受试者分别行最大前屈位、最大后伸位、最大左侧弯位、最大右侧弯位、最大左旋转位及最大右旋转位活动,采集受试者最大程度前屈-后伸、最大程度左旋-右旋和最大程度左侧弯-右侧弯时的上颈椎图像,通过以上6个活动度来全面了解上颈椎的三维在体运动学特性。
 
背景:人体的颈椎是承载头颅和连接脊柱的重要结构,虽然是脊柱中体积最小,但是灵活性最大,活动频率最高的节段,同时也是人体几何形体和运动特性最为复杂的的骨性结构之一,承受了头部的生理负荷,还肩负着屈伸、侧弯、旋转等运动功能。因此,颈椎成为了人体脊柱最容易受到伤害和出现退行性病变的结构之一。而对颈椎特别是上颈椎生物力学的分析,认识和理解其正常的功能和力学机制,也将为更好的治疗上颈椎疾患提供理论基础。
目的:通过双荧光透视影像系统联合螺旋CT观察测定健康成年人生理载荷下寰枢椎在体三维瞬时运动特点。
方法:招募17名健康志愿者,采用双X射线透视影像系统和螺旋CT检查相结合技术,利用相关处理软件建模,并与双荧光透视影像系统捕获的X射线透视图像匹配,重现上颈椎三维瞬时运动状态,通过建立椎体几何中心坐标并进行测量,从而获得健康成人生理载荷下上颈椎在体三维瞬时运动学数据。
结果与结论:①前屈后伸时,C1-2节段与C2-3节段在冠状轴位移、矢状轴位移和旋转角度差异有显著性意义;②左右侧屈时,C1-2节段旋转角度明显大于C2-3节段。左右旋转时,C1-2节段与C2-3节段在冠状轴位移、垂直轴位移,侧屈角度和旋转角度均有明显差异且有显著性意义;③说明双荧光透视影像系统联合螺旋CT测量能够获得健康成人寰枢椎在体三维瞬时运动六自由度数据,并发现寰枢椎活动以旋转运动为主,以及上颈椎在体生理活动范围及特点,为上颈椎疾病非固定手术方案提供了量化参考。
中国组织工程研究杂志出版内容重点:人工关节;骨植入物;脊柱;骨折;内固定;数字化骨科;组织工程
ORCID: 0000-0002-7249-1553(魏冬)

关键词: 骨科植入物, 数字化骨科, 生理载荷, 寰枢椎, 运动学, 透视, 三维模型, 瞬时运动, 在体试验, 健康成人, 国家自然科学基金

Abstract:

BACKGROUND: The cervical spine of the human body is an important structure carrying the head and connecting the spine. Its volume is small, but its flexibility was great. Activity frequency was highest. Simultaneously, cervical spine is the most complicated bony structure of geometric and kinematic characteristics of human body, bears the physiological load of the head, has functions of flexion and extension, lateral bending and rotation. Therefore, the cervical spine has become one of the most vulnerable structures with degenerative diseases of the spine. Analysis of upper cervical spine biomechanics, recognition and understanding of its normal function and mechanical mechanism will provide a theoretical basis for better treatment of upper cervical spine disorders.

OBJECTIVE: To observe the in vivo three-dimensional kinematics of the upper cervical spine in healthy human beings under physiological load with dual fluorescence X-ray imaging system and spiral CT.
METHODS: Seventeen healthy volunteers were recruited for this study. The vertebral segment motion of each subject was reconstructed with three-dimensional computed tomography and solid modeling software. In vivo cervical vertebral motion during functional postures was observed with dual fluoroscopic imaging. Coordinate systems were established at the vertebral center to obtain the intervertebral range of motion. 
RESULTS AND CONCLUSION: (1) During the flexion-extension motion, significant differences in the distance in coronal axis, sagittal axis and angle of rotation were detected in C1-2 and C2-3 segments. (2) During the left-right bending motion, the angle of rotation was obviously greater at C1-2 segment than that at C2-3 segment. During the left-right twisting motion, significant differences in distance of the vertical axis and the coronal axis, lateral flexion angle and rotation angle were detectable between C1-2 and C2-3 segments. (3) These findings confirmed that dual fluorescence X-ray imaging system combined with CT scan can obtain atlanto-axial three-dimensional instantaneous motion of six-DOF data of healthy adults, and found that the main motion of the C1-2 vertebrae is rotating. These data may provide us with some new information about the in vivo kinematics of the upper cervical spine and the non-fixed surgical operation.
中国组织工程研究杂志出版内容重点:人工关节;骨植入物;脊柱;骨折;内固定;数字化骨科;组织工程

Key words: Atlanto-Axial Joint, Dissection, Tissue Engineering