There are a lot of issues here and which way you go with your PhD will depend on what yoru research question is. Or you could have a "normal" foot, but magnitude of forces are high -> hurts. eg you could have a really "flat foot" or "overpronated" but the forces that are driving it are low -> no symptoms and easily fixed. and then there is the forces that associated with it. and then there are all the joint axes variations (look up planal dominance) that determines how much you get of what observation in the different body planes. A big problem with pes planus and pes plano valgus is that they are descriptive terms of an outcome. and different observations may be more or less important that others, eg some claim that a 'flat foot' that has the calcaneus that has gone past vertical is much more 'destructive' than one that hasn't Pes planus -> foot flat Pes planovalgus -> foot flat and heel in valgus BUT, there are so many different definitions and classifications - if this is part of your PhD, you going to have to resolve this issue of definitions and understandings. and different causes may be more or less important in correlating to pathology, even though the feet may look the same. and that is just the final static appearance of the foot and does not take into account that each of those different observations have different causes. What if the foot is 'normal' on all criteria except for the abduction of the forefoot? Is that "flat" or "pronated" etc etc etc
When a foot "flattens" or "pronates", there are various amounts of different observation in different body planes egĪ foot could be considered "planus" on the arch height criteria, but you see feet with normal arches but very valgus heels - should they be called "flat" or "pronated" This means that this apperanace of the foot may have several different causes if you going to do research on "pes planus", the results may depend on how many of which of the different causes end up in the group being investigated.
Pes planovalgus -> foot flat and heel in valgusīUT, there are so many different definitions and classifications - if this is part of your PhD, you going to have to resolve this issue of definitions and understandings.Ī big problem with pes planus and pes plano valgus is that they are descriptive terms of an outcome. Ptulaya - yes that is pretty much what it is.
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