Concurrent repeatability and reproducibility analyses of four marker placement protocols for the foot-ankle complex

JOURNAL OF BIOMECHANICS

卷:49

Article

Di Marco, Roberto^1,2  Rossi, Stefano³  Racic, Vitomir^4,5,6  Cappa, Paolo^1,7  Mazza, Claudia^2,5 

[1] Sapienza Univ Rome, Dept Mech & Aerosp Engn, Via Eudossiana 18, I-00184 Rome, Italy

[2] Univ Sheffield, Dept Mech Engn, Pam Liversidge Bldg,Mappin St, Sheffield S1 3JD, S Yorkshire, England

[3] Univ Tuscia, Dept Econ & Management, Ind Engn DEIM, Via Paradiso 47, I-01100 Viterbo, Italy

[4] Univ Sheffield, Dept Civil & Struct Engn, Sir Frederick Mappin Bldg,Mappin St, Sheffield S1 3JD, S Yorkshire, England

[5] Univ Sheffield, INSIGNEO Inst Silico Med, Sir Frederick Mappin Bldg,Mappin St, Sheffield S1 3JD, S Yorkshire, England

[6] Politecn Milan, Dept Civil & Environm Engn, I-20133 Milan, Italy

[7] NYU, Tandon Sch Engn, Dept Mech & Aerosp Engn, Brooklyn, NY 11201 USA

关键词: Foot kinematics;    Repeatability;    Reproducibility;    Treadmill and overground walking;    Statistical parametric mapping;   

DOI  :  10.1016/j.jbiomech.2016.07.041

来源: Elsevier

【 摘 要 】

Multi-segment models of the foot have been proposed in the past years to overcome limitations imposed by oversimplified traditional approaches used to describe foot kinematics, but they have been only partially validated and never compared. This paper presents a unique comparative assessment of the four most widely adopted foot kinematic models and aims to provide a guidance for the clinical interpretation of their results. Sensitivity of the models to differences between treadmill and overground walking was tested in nine young healthy adults using a 1D paired t-test. Repeatability was assessed by investigating the joint kinematics obtained when the same operator placed the markers on thirteen young healthy adults in two occasions. Reproducibility was then assessed using data from three randomly selected participants, asking three operators to repeat the marker placement three times. The analyses were performed on sagittal kinematics using curve similarity and correlation indices (Linear Fit Method) and absolute differences between selected points. Differences between treadmill and overground gait were highlighted by all the investigated models. The two most repeatable and reproducible investigated models had average correlations higher than 0.70, with the lowest values (0.56) obtained for the midfoot. Averaged correlations were always higher than 0.74 for the former and 0.70 for the latter, with the lowest obtained for the midfoot (0.64 and 0.51). For all investigated models, foot kinematics generally showed low repeatability: normative bands must be adopted with caution when used for comparison with patient data. (C) 2016 The Authors. Published by Elsevier Ltd. This is an open access article under the CC BY license (http://creativecommons.orgilicensesiby/4.0/).

【 授权许可】

Free