Cao Jin, Hu Shan-Shan, Zheng Hua-Jiang, Zhang Nan, Zhong Zhao-Ping
Department of Orthopaedics, Ningbo No.6 Hospital, Ningbo 315040, Zhejiang, China.
Zhongguo Gu Shang. 2020 Aug 25;33(8):741-4. doi: 10.12200/j.issn.1003-0034.2020.08.011.
To explore the method and accuracy of measuring the femoral neck anteversion in children with developmental dislocation of the hip by using 3D printing technology, so as to find out the method of measuring the femoral neck anteversion accurately and guide the formulation of the operation plan.
From June 2016 to September 2018, 17 patients with unilateral developmental dislocation of the hip were enrolled in the study, including 2 males and 15 females, aged 2 to 13 (5.47±0.81) years old, 11 on the left and 6 on the right. The methods of CT, 3D printing and intraoperative anteversion of femoral neck were used to measure the anteversion of femoral neck respectively. The intraoperative measurement was used as the standard reference value forstatistical analysis, and the accuracy of the first two methods was compared.
The average value of CT was (36.00±1.66)°, the average value of model method was(43.91±1.62)°, and the average value of intraoperative method was(44.21±1.62)°. There were significant differences in CT measurement, model measurement and intraoperative measurement(<0.05). There was no significant difference between model method and intraoperative method (>0.05).
Compared with the traditional CT method, the 3D printing model method is simpler, more accurate and more repeatable, and can simulate the operation before operation. It is an ideal method to measure the femoral neck anteversion.
探讨运用3D打印技术测量发育性髋关节脱位患儿股骨颈前倾角的方法及准确性，以找出准确测量股骨颈前倾角的方法并指导手术方案的制定。
选取2016年6月至2018年9月收治的17例单侧发育性髋关节脱位患儿，其中男2例，女15例；年龄2～13岁，平均（5.47±0.81）岁；左侧11例，右侧6例。分别采用CT测量法、3D打印测量法及术中股骨颈前倾角测量法测量股骨颈前倾角。以术中测量值作为标准参考值进行统计学分析，比较前两种方法的准确性。
CT测量法平均值为（36.00±1.66）°，模型测量法平均值为（43.91±1.62）°，术中测量法平均值为（44.21±1.62）°。CT测量、模型测量与术中测量比较差异有统计学意义（<0.05）；模型测量法与术中测量法比较差异无统计学意义（>0.05）。
与传统CT测量法相比，3D打印模型测量法更简便、准确、可重复性强，且能在术前模拟手术，是测量股骨颈前倾角的理想方法。
