Wang Lin, He Kunjin, Chen Zhengming
College of Internet of Things Engineering, Hohai University, Changzhou, China; Changzhou City Key Lab of Orthopaedic Implants Digital Technology, Changzhou, China.
Comput Math Methods Med. 2016;2016:1247560. doi: 10.1155/2016/1247560. Epub 2016 Dec 1.
Femur parameters are key prerequisites for scientifically designing anatomical plates. Meanwhile, individual differences in femurs present a challenge to design well-fitting anatomical plates. Therefore, to design anatomical plates more scientifically, analyses of femur parameters with statistical methods were performed in this study. The specific steps were as follows. First, taking eight anatomical femur parameters as variables, 100 femur samples were classified into three classes with factor analysis and Q-type cluster analysis. Second, based on the mean parameter values of the three classes of femurs, three sizes of average anatomical plates corresponding to the three classes of femurs were designed. Finally, based on Bayes discriminant analysis, a new femur could be assigned to the proper class. Thereafter, the average anatomical plate suitable for that new femur was selected from the three available sizes of plates. Experimental results showed that the classification of femurs was quite reasonable based on the anatomical aspects of the femurs. For instance, three sizes of condylar buttress plates were designed. Meanwhile, 20 new femurs are judged to which classes the femurs belong. Thereafter, suitable condylar buttress plates were determined and selected.
股骨参数是科学设计解剖型钢板的关键前提条件。同时，股骨的个体差异对设计贴合度良好的解剖型钢板构成了挑战。因此，为了更科学地设计解剖型钢板，本研究采用统计方法对股骨参数进行了分析。具体步骤如下。首先，以八个解剖学股骨参数为变量，通过因子分析和Q型聚类分析将100个股骨样本分为三类。其次，根据三类股骨的平均参数值，设计了与三类股骨相对应的三种尺寸的平均解剖型钢板。最后，基于贝叶斯判别分析，可将新的股骨归入合适的类别。此后，从三种可用尺寸的钢板中选择适合该新股骨的平均解剖型钢板。实验结果表明，基于股骨的解剖学特征对股骨进行分类是相当合理的。例如，设计了三种尺寸的髁支持钢板。同时，对20个新的股骨判断其所属类别。此后，确定并选择合适的髁支持钢板。
