Off ice training
Try insanity asylum. This is great for athletic movements
Depending on the injuries it might also help to get into isometrics.
Lunges lunges squats squats jumps jumps and lots of it. All different variants. When you can add moderate weight high rep in. Core and abs every other day. Balance routines daily, single leg ones are prefered. Stretching everyday pre and post workouts and even if you dont work out stretch
Practice yoga for flexibility. Try Tia chi to help strengthen your legs as well. Really concentrate on your breathing techniques this is key for any kind of athletic activities that people do. Its really hard to come back from injuries I've had a lot because of what I do. Just be very positive and don't think that this is a set back. Its a big learning experience. Don't doubt yourself and be happy were u r at.
Try acupuncture and message therapy. These r also good for recovery. Eating healthy has a big part in recovery and to rebuild strength.