中国组织工程研究 ›› 2022, Vol. 26 ›› Issue (3): 344-349.doi: 10.12307/2022.056

• 数字化骨科 digital orthopedics • 上一篇    下一篇

足姿指数评估扁平足信度及在3D打印鞋垫中的应用

宋  艳1,郑  坤1,魏浩馨1,鲁德志1,许苑晶2,王孝文1,王金武3   

  1. 1潍坊医学院康复医学院,山东省潍坊市   261053;2上海交通大学生物医学工程学院,上海市   200011;3上海市骨科内植物重点实验室,上海交通大学医学院附属第九人民医院骨科,上海市   200011
  • 收稿日期:2021-04-06 修回日期:2021-04-10 接受日期:2021-05-17 出版日期:2022-01-28 发布日期:2021-10-27
  • 通讯作者: 王金武,博士,教授,主任医师,上海市骨科内植物重点实验室,上海交通大学医学院附属第九人民医院骨科,上海市 200011 王孝文,博士,副教授,潍坊医学院康复医学院,山东省潍坊市 261031
  • 作者简介:宋艳,女,1994 年生,山东省枣庄市人,汉族,潍坊医学院康复医学院在读硕士,主要从事3D打印个性化矫形鞋垫的研究。
  • 基金资助:
    上海市科委项目(18441903700,19441917500,19441908700),项目负责人:王金武;上海交通大学医学院附属第九人民医院临床研究型 MDT 项目 (201914),项目负责人:王金武

reliability of flat feet evaluated by foot posture index and its application in three-dimensional printing insoles

Song Yan1, Zheng Kun1, Wei Haoxin1, Lu Dezhi1, Xu Yuanjing2, Wang Xiaowen1, Wang Jinwu3   

  1. 1School of Rehabilitation Medicine, Weifang Medical University, Weifang 261053, Shandong Province, China; 2School of Biomedical Engineering, Shanghai Jiao Tong University, Shanghai 200011, China; 3Shanghai Key Laboratory of Orthopedics Implants, Department of Orthopedics, Ninth People’s Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai 200011, China
  • Received:2021-04-06 Revised:2021-04-10 Accepted:2021-05-17 Online:2022-01-28 Published:2021-10-27
  • Contact: Wang Jinwu, MD, Professor, Chief physician, Shanghai Key Laboratory of Orthopedics Implants, Department of Orthopedics, Ninth People’s Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai 200011, China Wang Xiaowen, MD, Associate professor, School of Rehabilitation Medicine, Weifang Medical University, Weifang 261053, Shandong Province, China
  • About author:Song Yan, Master candidate, School of Rehabilitation Medicine, Weifang Medical University, Weifang 261053, Shandong Province, China
  • Supported by:
    the Science and Technology Commission Project of Shanghai, No. 18441903700, 19441917500, 19441908700 (to WJW); the Clinical Research MDT Project of the Ninth People’s Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, No. 201914 (to WJW)

摘要:

文题释义:
足姿指数(foot posture index,FPI):是一种足部多平面评估方法,通过矢状面、冠状面和水平面对足部姿势进行量化,可将足位分为旋前、中位、旋后位,足部姿势是由作用于足部的内外作用力所引起的解剖结构的位置所决定。足姿指数首次由澳大利亚REDMOND等在2001年的论文中提出,最初包括8个标准,随后,FPI-8被修改为6个标准,现在被称为“FPI-6”。足姿指数评估有助于解释疼痛的原因、损伤易感性以及日常生活活动和运动中的下肢生物力学,以选择最佳的治疗干预措施。
重测信度(test-retest reliability):又称再测信度,为常用信度评估方法之一。反映测验跨越时间的稳定性和一致性,即应用同一测验方法,对同一组被试者先后2次进行测查,然后计算2次测查所得分数的关系系数,相关程度高,表示前后测量一致性高,稳定性好。

背景:许多国外文献对足姿指数的信度进行了研究,但国内少有研究足姿指数应用于扁平足患者中的信度,也未有探讨足姿指数在3D打印矫形鞋垫中的应用。
目的:探讨足姿指数(FPI-6)在扁平足患者足部姿势中的信度,对扁平足患者足踝姿势、功能、损伤进行预测,为3D打印个性化矫形鞋垫的设计提供理论依据。
方法:选取2020年5至11月就诊于上海交通大学医学院附属第九人民医院骨科的40例6-60岁的扁平足患者,根据年龄分为2组:6-18岁儿童组20例;19-60岁成人组20例。设定FPI-6评定者2名(评定者1、评定者2)经过FPI-6系统学习,熟练后对其足部姿势进行第1次评估,在第1次评估后的7 d内再由评定者1进行第2次评估。计算组内相关系数,对重测信度和评分者间信度进行评价。该研究方案的实施符合《赫尔辛基宣言》和上海交通大学医学院附属第九人民医院对研究的相关伦理要求 ( 医院伦理批件号:2016-124-T73,审批时间:2016-10-26),所有受试者及监护人在参与之前都阅读并签订了知情同意书。
结果与结论:①儿童FPI-6各项及总分重测信度除了外踝上下曲率外ICC均大于0.75,高度可信,其中外踝上下曲率的ICC值在0.4-0.74之间,中等信度(P < 0.05);评分者间信度足姿指数各项及总分显示ICC除了外踝上下曲率外均大于0.75,高度可信,其中外踝上下曲率的ICC值在0.4-0.74之间,中等信度(P < 0.05);②成人足姿指数各项及总分显示重测信度及评分者间信度为中度到高度可信(P < 0.05);③结果显示,FPI-6在成人和儿童扁平足患者中信度是中度到高度可信,足姿指数可用于评估中国儿童及成年扁平足患者并进行严重程度分级,足姿指数的高可靠性可为后期3D打印鞋垫的设计及治疗效果的评估提供理论依据。
https://orcid.org/0000-0001-8561-7074 (宋艳) 

中国组织工程研究杂志出版内容重点:人工关节;骨植入物;脊柱;骨折;内固定;数字化骨科;组织工程

关键词: 足姿指数, 扁平足, 儿童, 成年人, 信度, 3D打印, 鞋垫, 矫形器

Abstract: BACKGROUND: Many foreign studies have discussed the reliability of foot posture index, but few domestic studies have discussed the reliability of foot posture index applied to patients with flat feet, nor the application of foot posture index in three-dimensional (3D) printed insoles.  
OBJECTIVE: To explore the reliability of foot posture index in the foot posture of patients with flat foot, to predict the injury of foot and ankle posture function in patients with flat foot, and to provide a theoretical basis for the design of 3D printing personalized orthopedic insole.
METHODS:  Forty patients with flat feet aged 6-60 years were selected from the Department of Orthopedics, the Ninth People’s Hospital Affiliated to Shanghai Jiao Tong University School of Medicine from May to November 2020. These patients were divided into two groups according to age: 20 cases in group of children aged 6-18 years; 20 cases in group of adults aged 19-60 years. Two raters (rater 1 and rater 2) were trained by FPI-6 system, and then the foot posture was evaluated for the first time. The rater 1 was evaluated for the second time within seven days after the first evaluation. The intra group correlation coefficient was calculated to evaluate the test-retest reliability and inter tester reliability. The protocols were in accordance with Declaration of Helsinki and the relevant ethical requirements of Ninth People’s Hospital Affiliated to Shanghai Jiao Tong University School of Medicine (approval No. 2016-124-T73; approval date: 2016-10-26). All subjects and guardians read and signed the informed consent before participating.  
RESULTS AND CONCLUSION: (1) The test-retest reliability of foot posture index was higher than 0.75 except for the curvature of lateral malleolus, with high reliability. The ICC value of lateral malleolus was between 0.4 and 0.74, with moderate reliability (P < 0.05). The inter rater reliability and the total score of foot posture index showed that ICC was more than 0.75 except for the upper and lower curvature of the lateral malleolus, which was highly reliable, and the ICC value of the upper and lower curvature of the lateral malleolus was between 0.4 and 0.74, with medium reliability (P < 0.05). (2) The test-retest reliability and interrater reliability of adult foot posture index were moderate to highly reliable (P < 0.05). (3) The results show that foot posture index is moderate to highly reliable in adults and children with flatfoot. Foot posture index can be used to evaluate Chinese children and adults with flatfoot and grade the severity of flatfoot. The high reliability of foot posture index can provide a theoretical basis for the design of 3D printing insole and the evaluation of treatment effect.

Key words: foot posture index, flatfoot, children, adults, reliability, 3D printing, insole, orthosis

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