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Discordance of the Evaluation of the Plantar Footprint in Kidney Transplant

Cristina González-Martín
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Vanesa Balboa-Barreiro
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Raquel Veiga-Seijo
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Teresa Seoane-Pillado
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Laura Lema-Verdía
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Estefanía Couceiro-Sanchez
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Background

The measures used for the diagnosis of biomechanical pathologic disorders are variable. The aim of this study was to determine the concordance between the Clarke angle and the Chippaux-Smirak and Staheli indices in evaluation of the footprints of kidney transplant patients.

Methods

An observational prevalence study was performed in kidney transplant patients in the University Hospital Complex A Coruña from 1981 through 2014. After obtaining patient informed consent and ethics committee approval, sociodemographic (age and sex) and anthropometric (body mass index) variables and comorbidity (Charlson Comorbidity Index score) were assessed for each patient, and a podiatric medical examination was performed of the footprint through a pedigree (Chippaux-Smirak index, Staheli index, and Clarke angle). A descriptive analysis of all of the variables was performed; for agreement, the kappa index and the Bland-Altman method were used.

Results

We found a predominance of male sex (65.6%) and a high level of overweight (43.3%) in the sample. The highest concordance between the indices studied is presented by the Chippaux-Smirak index, with a kappa index of 0.86 for the left foot and 0.76 for the right foot.

Conclusions

High agreement was attained among observers in measurements of the footprints of kidney transplant patients.

Rheumatology and Public Health Research Group, Nursing Research and Health Care, Biomedical Research Institute of A Coruña (INIBIC), Complejo Hospitalario Universitario de A Coruña (CHUAC), SERGAS, University of Coruña (UDC), As Xubias 84, 15006 A Coruña, Spain.

Infectious Diseases Service, Complexo Hospitalario Universitario de A Coruña, Sergas, Spain.

Corresponding author: Cristina González-Martín, PhD, Rheumatology and Public Health Research Group, Nursing Research and Health Care, Biomedical Research Institute of A Coruña (INIBIC), Complejo Hospitalario Universitario de A Coruña (CHUAC), SERGAS, University of Coruña (UDC), As Xubias 84, 15006 A Coruña, Spain (E-mail: cristina.gmartin@udc.es)
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