Research on positioning methods of the ankle joint in three-dimensional model
CHEN Qing, LI Xing-rui, SHENG Hua-jun, LV Fa-jin
Chinese Journal of Clinical Anatomy ›› 2016, Vol. 34 ›› Issue (2) : 151-154.
Research on positioning methods of the ankle joint in three-dimensional model
Objective To find out the exact center of ankle joint position, this study use different methods in three-dimensional(3D) reconstruction model, and determine the feasibility of these methods. Then provide morphological basis for the 3D simulation of lower limb knee arthroplasty. Methods 33 cases of normal adult ankle joints were scanned by CT. The data was imported into three-dimensional reconstruction software. 3D reconstruction software was used to reconstruct the 3D model of the ankle joint; the midpoint of top talus (point A)、the centroid of point cloud in top talus(point B) and the midpoint between the medial malleolus and lateral malleolus(point C) respectively were used for positioning of the center of the ankle joint in the reverse engineering software, and measurement of the distance among these three points in the coronal plane. Data analysis was performed using statistics package for social science (SPSS). Results The 3D model of the ankle joint was successfully established, and the center of ankle joint was located using different positioning methods. The measurement results showed: The average distance between point A and point B was (1.058±0.714)mm; The average distance between point B and point C was (1.684±1.283)mm; The average distance between point A and point C was (1.484±1.040)mm. And the distance difference between each group was not statistically significant (P>0.05). Conclusion Location of center of the ankle joint based on 3D reconstruction is feasible, and more stable than positioning methods in two-dimensional plane. And the centroid of point cloud in top talus as the talus center of ankle joint are more convenient than the other two methods.
Three-dimension reconstruction / Center of ankle joint / Three-dimension positioning / Total knee arthroplasty
[1] Nofrini L, Slomczykowski M, Iacono F, et al. Evaluation of accuracy in ankle center location for tibial mechanical axis identification [J]. Journal of Investigative surgery, 2004, 17 (1):23-29.
[2] Krackow KA, Bayers-Thering M, Phillips MJ, et al. A new technique for determining proper mechanical axis alignment during total knee arthroplasty: progress toward computer-assisted TKA [J]. Orthopedics, 1999, 22(7): 698-702.
[3] 李伟. 基于MRI技术全膝关节置换中个体化导航模板的实验研究[D].昆明：昆明医科大学昆明总医院临床学院，2014.
[4] 甘煜东. 计算机辅助个体化导航模板在膝关节置换中的应用基础研究[D]. 广州：南方医科大学人体解剖与组织胚胎学教研室， 2012.
[5] Sato T, Koga Y, Omori G. Three-dimensional lower extremity alignment assessment system: application to evaluation of component position after total knee arthroplasty [J]. The Journal of Arthroplasty, 2004,19(5): 620-628.
[6] Moreland JR, Bassett LW, Hanker GJ. Radiographic analysis of the axial alignment of the lower extremity [J]. Bone Joint Surg(Am), 1987, 69: 745-749.
[7] Tang WM, Zhu YH, Chiu KY. Axial alignment of the lower extremity in Chinese adults[J].The Journal of Bone and Joint Surgery, 2000, 82A (11):1603-1608.
[8] Dennis DA, Channer M, Susman MH, et al. Intramedullary versus extramedullary tibial alignment systems in total knee arthroplasty.[J] Arthroplasty, 1993, 8:43.
[9] 吕厚山.人工关节外科学[M]. 北京：科学出版社，2001: 294-295.
[10] Siston RA, Daub AC, Giori NJ, et al. Evaluation of methods that locate the center of the ankle for computer-assisted total knee arthroplasty[J]. Clinical Orthopaedics and Related Research, 2005, 439: 129-135.
[11]Pikulkaew T, Pornrattanamaneewong C, Chareancholvanich K. Anatomical landmark to locate the ankle center for determination of the mechanical axis of the lower extremity in thai subjects [J]. Journal of the Medical Association of Thailand, 2012, 95 (5): S1-S5.
[12] 秦焕玉,谢在龙,金明俊,等.踝关节中心与内外踝体表连线中点关系的X线测量[J]. 中国骨与关节损伤杂志, 2005,20(40): 278-279.
[13] 贾军锋.下肢力线三维测量与膝外翻并短缩畸形手术三维设计[D] .广州：广州中医药大学，2014.
[14] 柴旭峰,卫小春.下肢力线的X线测量及影响因素[J]. 中国矫形外科杂志，2007, 15(21): 915-917.
/
| 〈 |
|
〉 |
