Abstract:Objective To verify the correlation and clinic significance of shoe size of Chinese and total knee arthroplasty(TKA) component size through analyzing patients undergoing primary TKA.Methods A single center retrospective cohort study was conducted on 121(132 knees) Chinese patients undergoing primary TKA from December 2018 to October 2021,including 34(40 knees) male patients and 87(92 knees) female patients.The range of age was 47 to 83 years,and the mean age was (66.03±7.49)years.The range of height was 142~180 cm,and the mean height was (161.50±7.68)cm.The range of weight was 46~95 kg,and the mean weight was (66.64±10.16)kg.The range of body mass index(BMI) was 19.15~33.32 kg/m2,and the mean BMI was (25.55±3.38)kg/m2.All data of patients including age,gender,height,weight,manufacturers of components,and size of tibial components and femoral components were collected and recorded,and three manufacturers were included in the study.Size of patient shoes was recorded by telephone interview.The spearman’s rank correlation was utilized to analyze the collected data.Results The statistically significant and good positive correlation outcomes of the spearman’s rank correlation analysis were verified as follows:shoe size and tibial component anterior posterior(AP) diameter(r=0.608,P<0.05);shoe size and tibial component medial lateral (ML) diameter (r=0.631,P<0.05);shoe size and femoral component AP diameter (r=0.739,P<0.05);shoe size and femoral component ML diameter (r=0.712,P<0.05).The statistically significant and moderate positive correlation outcomes were verified as follows:height size and tibial component AP diameter(r=0.407,P<0.05);height size and tibial component ML diameter(r=0.446,P<0.05);height size and femoral component AP diameter(r=0.536,P<0.05);height size and femoral component ML diameter(r=0.565,P<0.05).Conclusion There exists positive correlation of shoe size of Chinese and primary TKA component size.The correlation can improve the accuracy of estimating size of the prothesis in the preoperative planning for orthopedists,which is cost-effective.
蒋玮,申才良 *,杨昆,胡孔足,桂斌捷,孙和炎,张利锋,李岩. 国人鞋子尺寸与初次全膝关节置换术假体大小的关联研究[J]. 实用骨科杂志, 2022, 28(6): 498-502.
Jiang Wei,Shen Cailiang *,Yang Kun,Hu Kongzu,Gui Binjie,Sun Heyan,Zhang Lifeng,Li Yan. The Study of Correlation of Shoe Size of Chinese and Component Size of Primary Total Knee Arthroplasty. sygkzz, 2022, 28(6): 498-502.
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