Reliability of the Modified Foot Posture Index

Abstract

The FPI-6 should be used with extreme caution and may actually have limited value, especially from a research perspective.

Static Foot Posture Associated With Dynamic Plantar Pressure Parameters

“…Overall, the classification of a pronated foot type was 2.4 times more likely than a supinated foot type. The limited number of individuals classified as having a supinated foot was consistent with prior reports that used the FPI-6 classification 11 and was in contrast to the 14.2% (n = 142) of the participants with a documented high arch, based on AHI values enrolled in this study. 37 However, the FPI-6 composite scores measured in this study were similar to the normative cutoff values from the retrospective analysis of 619 observations from a normal adult sample by Redmond et al 31 When Redmond et al 31 compared these 619 feet with 1029 observations of pathological feet from a sample that included individuals with neurogenic and idiopathic cavus feet, group differences and increased distribution of FPI-6 composite scores were noted.…”

“…These values are comparable to previously published reliability values. 8,11,15,25,27 The arch height index (AHI) was also assessed on all participants as a quantitative assessment of arch height normalized to foot length. 7,24 Heel-to-toe length was measured as the distance from the most posterior aspect of the heel to the longest toe.…”

“…The FPI-6 composite score ranges from -12 to +12 and is used to categorize foot type based upon established cutoff scores. 22,31,32 Researchers have found the FPI-6 to have moderate to good reliability, 8,11,15,25,27 while reported levels of association between the FPI-6 and radiographic measurements of the foot vary. 25,34 Although the FPI-6 is a relatively new measure, initial investigations are encouraging regarding the use of this tool to screen athletes at risk for lower extremity injury.…”

Foot structure is significantly associated to subtalar joint kinetics and mechanical energetics

“…All static foot measures were collected by a qualified podiatrist (JNM). The static measures used in the study have high intra-rater reliability FPI [10], AHR and FMM [11].…”

Relación entre estructura del pie y características del ligamento rotuliano en jugadores de voleibol

“…Likert que posteriormente pasaron a ser 6 denominándose FPI-6 para evitar confusiones con la primera versión 106,107 . Es una herramienta clínica diagnóstica, cuya finalidad consiste en proporcionar una valoración del tipo de pie de manera rápida, simple y multidimensional.…”