Objective To explore the clinical teaching effect of 3D printing model technology in clinical teaching of operation for developmental hip joint dislocation. Methods We selected 28 students of fifth grade from the Fourth Military Medical University who were interns in Department of Pediatric Orthopedic of Chinese PLA General Hospital in 2017. The conventional teaching plan was used in control group while the conventional teaching plan with 3D printing model teaching was used in experimental group. The teaching effect evaluation indicators included clinical data analysis and teaching-related factor analysis. We recorded data of the two groups and made statistical analysis. Results Experimental group significantly outperformed control group in accurate judgment of the femoral neck anteversion and collodiaphysial angle (P<0.05). Although there was no significant difference in understanding of disease concept and judging the direction of hip joint dislocation, experimental group had a higher numerical value than control group. Besides, the questionnaire survey results of teaching effect showed that experimental group was significantly superior in students' learning interest, learning efficiency and attention (P < 0.05 ). Conclusion Application of 3D printing model can bring good teaching effects in clinical teaching of developmental hip joint dislocation.%目的探讨3D打印模型技术在儿童发育性髋关节脱位手术中的临床教学效果.方法选取2017年在解放军总医院实习的第四军医大学五年级学生,共28名.将其随机分为两组,采用常规教学方案的作为对照组,常规教学方案增加3D打印模型技术作为实验组.教学效果评价指标包括临床数据分析和教学相关因素分析,将两组的数据进行记录及统计学分析.结果实验组在前倾角及颈干角判定准确性方面明显高于对照组,差异具有统计学意义(P<0.05).在疾病概念理解、髋关节脱位方向的判定方面虽然无显著性差异,但是实验组差异数值高于对照组.两组教学效果的调查问卷结果显示,实验组在学习兴趣、学习效率及学生注意力评分方面明显优于对照组(P<0.05).结论应用3D打印模型能够给儿童发育性髋关节脱位临床教学带来良好的教学效果.
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