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I have to disagree with (well now deleted user). Morton’s toe (in my case a short 1st metatarsal in my right foot) very likely causes EVERYTHING. Morton’s toe causes you to bear the weight of that leg on the ball of your foot behind your 2nd toe instead of your big toe changing the “tripod” of your foot into an ice skate. I am no expert but that has to have profound effects on your entire body, especially after a lifetime of walking.