You should check with your doctor after such a serious injury, to make sure you ease back in without re-injuring yourself.
Maybe you could modify a couch to 5K plan for hiking, they basically start out slowly and then build distance from week to week. You don't want to go out too gung-ho, or you risk injury. I think if you have nearby trails, start with the easiest ones from the start and build up gradually. You can always turn around to keep your distance/elevation down at the beginning of your program.
Also, take stock of your equipment, make sure you have good hiking boots or shoes that will protect your feet, and keep you hiking in comfort!
highest weight ever:202, SP starting weight: 143
New goal: 125 lbs, just to see what that looks and feels like! Hit it: Feb 2013!
H: 5''4" 49 y.o.
"Don''t let yesterday use up too much of today." Will Rogers
"Eat Food, Not Too Much, Mostly Plants" Michael Pollan
| current weight: 8.6 over