基于CT三维重建的成人第5掌骨的形态学及临床意义  

Morphology of the fifth metacarpal bone based on three-dimensional computed tomography image and its clinical significance

作　　者：邓玖征[1] 赵喆[1] 朱剑津[1] 程晓光[2] 马毅民[2] 潘勇卫[1] DENG Jiu-zheng;ZHAO Zhe;ZHU Jian-Jin;CHENG Xiao-guang;MA Yi-min;PAN Yong-wei(Department of Orthopedics,Beijing Tsinghua Changgung Hospital,School of Clinical Medicine,Tsinghua University,Beijing 102218,China;Department of Radiology,Beijing Jishuitan Hospital,Beijing 100035,China)

机构地区：[1]清华大学附属北京清华长庚医院骨科,清华大学临床医学院,北京102218 [2]北京积水潭医院放射科,北京100035

出　　处：《解剖学报》2020年第3期411-415,共5页Acta Anatomica Sinica

基　　金：北京市科技计划项目(Z181100001918030)。

摘　　要：目的通过对成人第5掌骨CT三维重建数据进行测量,探讨人类第5掌骨形态学特点及临床意义,为临床手术和器械设计提供依据。方法对医学影像工作站内留存的114例第5掌骨CT扫描进行三维重建,基于三维模型测量第5掌骨长度、掌骨头半径、掌骨弓半径和1/2掌骨弓圆心角、掌骨头偏心距和偏心比及髓腔狭部内径。结果成人掌骨长度(51.55±3.01)mm,掌骨头半径(6.59±0.49)mm,掌骨弓半径(99.58±26.83)mm,1/2掌骨弓圆心角(15.90±3.36)°,掌骨头偏心距平均(0.49±0.26)mm,掌骨头偏心比平均(7.4±3.9)%,髓腔峡部内径平均(2.28±0.77)mm。结论男性掌骨长度、掌骨头半径、掌骨头偏心距及髓腔峡部内径大于女性,其余指标性别间差异无显著性;左右手之间差异也无显著性。Objective To discuss the morphological features of the fifth metacarpal bone and clinical significance by measuring the three-dimensional(3-D)reconstruction model,and to improve the clinical technique and surgical instruments.Methods A total of 1143-D reconstruction models based on computed tomography data of fifth metacarpal bone were created.The length,the radius of head,the radius of arc,the 1/2 central angle of arc,the distance of head offset,the ratio of head offset,the inner diameter of the isthmus of medullary space were measured based on 3-D models.Results The fifth metacarpal bone length was(51.55±3.01)mm.The radius of the fifth metacarpal head was(6.59±0.49)mm.The radius of the fifth metacarpal bone arc was(99.58±26.83)mm.The 1/2 central angle of fifth metacarpal bone arc was(15.90±3.36)°.The distance of the fifth metacarpal head offset was(0.49±0.26)mm.The ratio of head offset was(7.4±3.9)%.The inner diameter of the isthmus of medullary space was(2.28±0.77)mm.Conclusion The length,the radius of head,the distance of head offset,the inner diameter of the isthmus of medullary space are different between male and female,and the other parameters are not different.There is no significant difference between left and right hand.

关 键 词：第5掌骨 解剖形态学 计算机X线断层摄影术 三维重建 人 

分 类 号：R323.71[医药卫生—人体解剖和组织胚胎学]