- mistifyLv 71 decade agoFavorite Answer
For which motion and for what purpose? Dorsiflexion (pulling the top of the foot up) requires 15 degrees for normal walking. Normal plantarflexion can reach 65 degrees. Inversion is usually around 30 degrees and eversion up to 15 degrees. Measuring the range of motion of the foot is highly complex and not very reliable, but it is the best method we have for quantifying movement in the "every day" clinic.