The invention pertains to a method for training an expert system for assessing dynamic plantar pressure measurements, the method comprising: obtaining, for each subject of said group of subjects, an image comprising time-varying two-dimensional plantar pressure measurements of at least one foot； spatially registering said obtained images of respective subjects to a target image； temporally registering said obtained images of respective subjects to said target image； and deriving (150) a plurality of categories of said subjects by applying a clustering algorithm to sets of data points obtained at corresponding coordinates in said spatially and temporally registered images. The invention also pertains to a of using an expert system for assessing dynamic plantar pressure measurements of a subject, to a computer program product, and to an expert system.
