Thanks Lazs, he's improving greatly right now, very, very happy with the progression of his mental ability. His hip still gives him trouble in terms of balance/etc, as he obviously wasn't able to do the 6 week of rehab you're supposed to do after a hip replacement, so he's doing that 3 months late ATM. His incredible pain there is gone, for 1.5 years he waited on the "wait list" to get him in for a hip replacement, and if it wasn't for a pretty random set of events that landed him in the hospital for emergency hip surgery at the end of January, he'd still be on the list, writhing in pain, and being prescribed ever increasing powerful opioids to deal with it, which is shit. Now he's on NO painkillers, none at all - from him literally crying out in pain in his sleep for 6 months prior to his January surgery (he wouldn't even be awake and he'd cry and and grab his hip in his sleep), to sleeping soundly and again, NO painkillers.
Couldn't be happier right now for him.
EDIT - Thanks to Danneskjold, who already has my new knife on the way, can't wait to see this one and also be able to use it, it'll have a good home here.