Given that the only cause for spastic diplegia other than CP is hereditary spastic diplegia, I would desperately like to accept my fifteen-year-old son's doctor's diagnosis of CP as a cause for the problems that have developed in his feet and ankles over the past couple of years.
I can't seem to find anyone who's been told anything remotely similar to what his Neurologist is telling us, however - i.e. that my son's CP is so incredibly mild, it wasn't causing him any problems until a sudden adolescent growth spurt resulted in his bones outgrowing his muscles' capacity to stretch.
My son walked perfectly normally up until a couple of years ago when we noticed that he preferred to walk on his toes rather than on the whole of his foot. Up until a few months ago, he was able to get his heels to the floor when reminded to do so. By now, he isn't able to get his left heel to the floor and there's evidence of an increasing level of spasticity in both of his calf muscles.
I want to believe what the doctor is saying, and I could use hearing from somebody - anybody! - who's noticed a connection between growing taller and apparently losing condition at the same time.
Alternatively, I guess we might need to find ourselves a new Neurologist!