Let’s look at working the chest for example. If I were bench pressing 300 pounds prior to my layoff I will begin my first work out with 135 pounds and do 3 or 4 sets of high reps in the 15-20 range. Adjust your weights accordingly. Then I may do 3 sets of flat dumbbell flies again with higher reps so as not to place to much stress on my tendons and ligaments.
Follow these same guidelines for all body parts and increase the weights and reps slowly and within a month you will be right back to hard training again and working towards your goals to get back in shape.