FPI - Foot Posture Index

The Foot Posture Index (FPI) is a diagnostic clinical tool aimed at quantifying the degree to which a foot can be considered to be in a pronated, supinated or neutral position. It is intended to be a simple method of scoring the various foot posture into a single quantifiable result, which in turn gives an indication of the overall foot posture. The foot posture index rates weightbearing posture according to a series of pre-defined criteria. All observations are made with the subject standing in a relaxed angle and base of gait, double limb support, static stance position. This relaxed double limb support position has been reported to approximate the position about which the foot functions during the gait cycle. The FPI was derived from a search of the literature yielding details of clinical assessment in more than 140 papers from which 36 distinct clinical measures were identified. The user attaches a score to a serie of observations that are routinely used. Features commensurate with an approximately neutral foot position are graded as zero, while pronated postures are given a positive value, and suplinated features a negative value. When the scores are combined, the aggregate value gives an estimate of the overall foot posture.

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