In my limited clinical experinece rearfoot position influences 1st ray function. This is particularly apparent in Functional hallux limitus. the 1st phalanx has limited dorsiflexion on the 1st met. in rcsp, however this usually improves significantly in ncsp. Which lends support to the arguement that the reafoot position, may be influencing structures more distally. Following on from this, I usually find when the client stands on a functional orthotic, the 1st phalanx dorsiflexion is greater than when the orthotic is not in place. The large assumption is the relates to dynamic gait