CAJ | 학술논문

背景:有关成人椎体钉进钉点的报道较多,但都只有一般性的描述,且由于不同种族、节段等差异,椎体形态变异较大,其置钉位置的选择也不一致.目的:通过CT扫描结合逆向工程软件建立下胸椎三维立体模型,数字化测量成年国人中下段胸椎侧前方椎骨相关解剖位置CT数据.方法:收集非脊柱疾患病例CT资料,利用Mimics软件建立国人完整中下段胸椎(T4-T12)三维立体模型,测量椎体正中冠状面左、右缘高度,正中矢状面前、中、后缘高度,椎体上终板矢状径及横径,椎体下板终矢状径及横径.结果与结论:国人中下段胸椎椎体上、下终板矢状径及横径均随椎序的增加而增大.在中、下段胸椎椎体上缘置钉,椎体螺钉的选择有一定的规律;由于椎体的横径始终大于矢状径(3.0-4.0 mm),建议在取材和修剪移植松质骨块时应将骨块修成横行的长方体(长大于宽3.0-4.0 mm).临床中下胸椎侧前方固定时应参考以上数据选择合适的纵行棒进行固定.
배경:유관성인추체정진정점적보도교다,단도지유일반성적묘술,차유우불동충족、절단등차이,추체형태변이교대,기치정위치적선택야불일치.목적:통과CT소묘결합역향공정연건건립하흉추삼유입체모형,수자화측량성년국인중하단흉추측전방추골상관해부위치CT수거.방법:수집비척주질환병례CT자료,이용Mimics연건건입국인완정중하단흉추(T4-T12)삼유입체모형,측량추체정중관상면좌、우연고도,정중시상면전、중、후연고도,추체상종판시상경급횡경,추체하판종시상경급횡경.결과여결론:국인중하단흉추추체상、하종판시상경급횡경균수추서적증가이증대.재중、하단흉추추체상연치정,추체라정적선택유일정적규률;유우추체적횡경시종대우시상경(3.0-4.0 mm),건의재취재화수전이식송질골괴시응장골괴수성횡행적장방체(장대우관3.0-4.0 mm).림상중하흉추측전방고정시응삼고이상수거선택합괄적종행봉진행고정.
@@@@BACKGROUND: There are many reports on the entrance point of adult vertebral screw, but most of the reports are the general description. Because of the differences in races and segments, the shape of vertebral body is various, and the choice of screw placement position is also varied. OBJECTIVE: To construct the three-dimensional model of lower thoracic vertebra through CT scanning combined with reverse engineering software, and to digital measure the correlated anatomic CT data of the lateral anterior middle and lower thoracic vertebra of Chinese adults. METHODS: The CT primary data of non-spinal disorders cases were col ected and the data were used for the establishment of three-dimensional model of complete middle and lower thoracic vertebra (T4-T12) of Chinese people with Mimics software. The coronal plane left and right edge height, midsagittal anterior, median and posterior edge height, sagittal diameter and transverse diameter of the upper vertebral endplate and the lower vertebral endplate were measured. RESULTS AND CONCLUSION: The sagittal diameter and transverse diameter of the upper and lower vertebral endplates were gradual y increased with the increasing vertebral sequence. The vertebral screw selection had certain regularity when placing in the anterior middle and lower thoracic vertebra; because the transverse diameter of vertebra bodies was always bigger than sagittal diameter for 3.0-4.0 mm, bone graft should be shaped into laterigrade cuboid (the length should be larger than width for 3.0-4.0 mm). The clinical lateral anterior approach internal fixation of middle and lower thoracic vertebra should refer to the data above.