Defining excessive, over, or hyper-pronation: A quandary

Abnormal-pronation, excessive-pronation, over-pronation, or hyper-pronation, are terms with a long historical use in both medical and research terminology pertaining to an abnormal movement of the foot. These terms are commonly used as a potential kinematic aetiology to explain the occurrence of multiple lower limb and foot pathologies. Yet despite this widespread use there is no clear definition to explain what the terms abnormal, excess, over, or hyper-pronation, mean. Without a strict definition the use of these terms as a patho-mechanical explanation of injuries, leaves a distinct lack of clarity and is meaningless in regards to being able to distinguish what movement may need clinical intervention. It is unlikely that hyper-pronation can be given a quantitative scale because individual anatomy and activity changes the necessary range of pronation within the foot. This paper attempts to give hyper-pronationa philosophically justifiable definition so that the term may be used in a more precise manner and avoid the confusion that presently exists clinically as well as in research literature.