It has good days and bad days, on good days I can squat 315 for 8-10 without pain, on bad days it hurts to squat down or kneel without any weight. It's gonna be a long rehab process.
To address the post, you can do whatever cardio you like as long as it gets your HR up and gets you sweating. Bike, incline walking, cross trainer, swimming, erg, sandbag carries, tire flips, light farmers walks, hill sprints, aerobics - whatever tickles your fancy. As long as you're working you'll burn fat.
You can still build muscle while burning fat, but understand that doing a lot of cardio will reduce your ability to do so. No reason you can't do both, just don't go overboard with the cardio if you're trying to pack on some size.
And obviously nutrition will have as large an effect as exercise when it comes to both losing fat and building muscle. |