Naio wrote:
Woohoo!
Are you sure about the no kayaking?  
As for twisting, etc, when you get to a certain point in bone healing, it is important that you DO subject the healing bone to various forces.  That's because bone growth is in response the forces the bone experiences.  
It's quite amazing, really.  Bones have these complex, arches, etc inside them, to handle the forces they have received, but they do not lay down extra bone where it's not needed (where it would handle forces they have NOT received).
So, if you rest a healing bone TOO much, it will be forever weak.
I am NOT saying you are doing that, and you should definitely do what your doctor says.  But you might bring up the subject with him/her, and ask at what point you ought to do what stuff.  Maybe doc is saying you should make sure the stress on your healing bone is in a controlled setting, e.g. physical therapy exercises?
Naio...the kayak isn't the issue it's the getting it together and down to the water. Mine is 17ft Folbot that requires lots of kneeling (getting up), scrabbling, more kneeling..to assemble..and then I have to get it to the water, usually over rocks, stumps, dogs. All of the aforementioned put the break at risk. I shall be patient, so as not to be A patient, again.
And thanks for the mention of the bones stuff. I am attending the physio lab here every weekday, putting myself and the bone thru ample twists, turns, balancing, muscle building, squats and bends. And then actual appointments P.T. twice a week, to give me more torturous routines. But I will say...man, it hurts when I screw up walking.
Gary Haupt