中国东北地区人群腰部节段椎间盘形态学参数CT三维测量及应用

Morphological Measurement of Chinese lumbar intervertebral disc and its significance

目的测量中国人腰部节段终板和椎间隙的形态学参数,为人工椎间盘设计、分型与制造奠定形态学基础。方法选择吉林大学中日联谊医院肉眼无器质性病变的T12-S1椎骨的CT轴位图像,共90例,其中男性45例,女性45例,年龄在20-70岁之间。测量T12下-S1上椎骨上下面左右径、前后径、弦高、椎间隙的前中后高和椎间隙夹角,并对测量结果进行性别、年龄、不同节段以及不同人种之间的比较分析。结果国人腰椎L1下-S1终板的前后径与左右径均与外国人种存在差异;椎体的终板并非平面而是具有一定的曲度。结论本研究为设计制造适合中国人的人工椎间盘提供形态学数据支撑。

Objective To measure the morphological parameters of lumbar intervertebral disc of Chinese by using computed tomography(CT)scans,and to provide an accurate morphometric basis for designing and developing the lumbar disc prostheses.Methods 90healthy subjects(45 males and 45females,20-70 years old)were scanned by CT.The parameters of each lumbar vertebra from T12to L5were measured by CT scans including upper anteroposterior length,upper center mediolateral length,lower anteroposterior length,lower center mediolateral length,height of endplates,intervertebral anterior height,intervertebral posterior height,intervertebral center height and intervertebral angle.These parameters were compared between ganders and among different levels and race.Results The anteroposterior and center mediolateral length of lower endplate of L1-upper endplate of L5in Chinese lumbar spine were different from that of foreign species.The surface of endplates is not flat but has a certain radian.The parameters of the T12/L1 intervertebral disc were supplemented and analyzed.Conclusion The study provides a morphological basis for designing the suitable artificial lumbar disc for Chinese population.