It is easy to see the big things, but, we sometimes forget that the small things matter.
Sometimes it take an obvious glaring asymmetry to make us appreciate that the small asymmetries can make the same or similar impact over a long period of time. Rivers can carve out canyons over time.
Here we see the gross difference that polio can make in leg size and in leg length. We must remember that changing a leg length also changes the symmetrical relationship of where the 2 knees hinge. A foot that pronates more than the other leg can lower the knee hinge point just a little because the talus drops further from its vertical height. We know very well that it for certain alters the hinge direction, posturing it more medially, but we cannot forget that a cranky knee on a side where the foot is flatter or pronates more excessively than the other is not to be ignored.
In this photo, we have dotted the knee at the same point on the patella. It is clear the knees will not hinge at the same time, thus stride and step lengths will change, and step width will be impacted. The pelvis will also spin more to one side on a pelvis that is lower on one side. This will impact lumbar spine sagittal happiness and stability/mobility. Hip and pelvis drift are real things in this case, and need your attention. *Just like a client that has a painful foot, a more pronated foot, more tibial torsion on one side etc. these things matter, and they often matter years down the road when many thousands of miles have been clocked into the subtle asymmetry. Sometimes these little things matter in our athletes too, who put the pedal to the floor asking the body for more.
Come hear our lecture tonight on www.onlineCE.com. You have to sign up early to get in. We won't disappoint. See you then. 7pm central time.